ฟังก์ชั่นของ PHP ที่ใช้สำหรับปัดเศษ

<br /> <div style="background-color: white; border: 0px; color: #333333; font-family: 'Lucida Sans Unicode', 'Lucida Grande', Tahoma, Verdana, Arial, Helvetica, 'Bitstream Vera Sans', sans-serif; font-size: 13px; line-height: 22px; margin-bottom: 22px; outline: 0px; padding: 0px; vertical-align: baseline;"> <img src="http://lh5.ggpht.com/_MJkDRxwRrPU/So_0jvX_qbI/AAAAAAAACoI/qqbYJk705l4/s400/%5BLoOkKaEW%5D-W-0806101404.jpg" style="background-color: transparent; border: 0px; height: auto; margin: 0px 0px 18px; max-width: 100%; outline: 0px; padding: 0px; vertical-align: baseline;" /></div> <div style="background-color: white; border: 0px; color: #333333; font-family: 'Lucida Sans Unicode', 'Lucida Grande', Tahoma, Verdana, Arial, Helvetica, 'Bitstream Vera Sans', sans-serif; font-size: 13px; line-height: 22px; margin-bottom: 22px; outline: 0px; padding: 0px; vertical-align: baseline;"> ฟังก์ชั่นของ PHP ที่ใช้สำหรับปัดเศษนั้น มีอยู่ทั้งหมด 3 ฟังก์ชั่น คือ <a href="http://www.select2web.com/php/php-floor.html" style="background-color: transparent; border: 0px; color: #743399; margin: 0px; outline: 0px; padding: 0px; text-decoration: none; vertical-align: baseline;" title="PHP ปัดเศษลง">floor()</a> , <a href="http://www.select2web.com/php/php-ceil.html" style="background-color: transparent; border: 0px; color: #743399; margin: 0px; outline: 0px; padding: 0px; text-decoration: none; vertical-align: baseline;" title="PHP ปัดเศษขึ้น">ceil()</a> และฟังก์ชั่น round() ที่ผมจะกล่าวในวันนี้</div> <div style="background-color: white; border: 0px; color: #333333; font-family: 'Lucida Sans Unicode', 'Lucida Grande', Tahoma, Verdana, Arial, Helvetica, 'Bitstream Vera Sans', sans-serif; font-size: 13px; line-height: 22px; margin-bottom: 22px; outline: 0px; padding: 0px; vertical-align: baseline;"> <span id="more-2190" style="background-color: transparent; border: 0px; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;"></span></div> <div style="background-color: white; border: 0px; color: #333333; font-family: 'Lucida Sans Unicode', 'Lucida Grande', Tahoma, Verdana, Arial, Helvetica, 'Bitstream Vera Sans', sans-serif; font-size: 13px; line-height: 22px; margin-bottom: 22px; outline: 0px; padding: 0px; vertical-align: baseline;"> ฟังก์ชั่น round() นั้นเราสา่มารถกำหนดได้ว่าจะเอาผลลัพธ์เป็นทศนิยมกี่ตำแหน่ง และการทำงานของฟังก์ชั่นนี้ ถ้าถึง 5 จะปัดขึ้น ถ้าน้อยกว่า 5 จะปัดลง</div> <h2 style="background-color: white; border: 0px; clear: both; color: #333333; font-family: Arial, sans-serif; font-size: 19px; line-height: 22px; margin: 0px; outline: 0px; padding: 28px 0px 14px; vertical-align: baseline;"> ไวยากรณ์</h2> <div class="wp_syntax" style="background-color: #f9f9f9; border: 1px solid silver; color: #110000; font-family: 'Lucida Sans Unicode', 'Lucida Grande', Tahoma, Verdana, Arial, Helvetica, 'Bitstream Vera Sans', sans-serif; font-size: 13px; line-height: 22px; margin: 0px 0px 1.5em; outline: 0px; overflow-x: auto; overflow-y: hidden; padding: 0px; vertical-align: baseline; width: 672px;"> <table style="background-color: transparent; background-position: initial initial; background-repeat: initial initial; border-collapse: collapse !important; border-spacing: 0px; border: none !important; font-size: 13px; line-height: 18px; margin: 0px !important; outline: 0px; padding: 0px !important; text-align: left; vertical-align: baseline; width: 672px;"><tbody style="background-color: transparent; border: 0px; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;"> <tr style="background-color: transparent; border: 0px; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;"><td class="code" style="background-image: none !important; border: none !important; line-height: normal !important; margin: 0px; outline: 0px; padding: 0px !important; vertical-align: top !important;"><pre class="php" style="-webkit-box-shadow: rgba(0, 0, 0, 0) 0px 0px 0px !important; background-color: transparent !important; border-bottom-left-radius: 0px !important; border-bottom-right-radius: 0px !important; border-top-left-radius: 0px !important; border-top-right-radius: 0px !important; border: 0px; box-shadow: rgba(0, 0, 0, 0) 0px 0px 0px !important; clear: none !important; float: none !important; font-size: 12px !important; line-height: 16px !important; outline: 0px; overflow: visible !important; padding: 0px !important; vertical-align: baseline; width: auto !important;"><span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span> ตัวเลข <span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">[</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> จำนวนทศนิยม <span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">=</span> <span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">0</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">]</span> <span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span></pre> </td></tr> </tbody></table> </div> <div style="background-color: white; border: 0px; color: #333333; font-family: 'Lucida Sans Unicode', 'Lucida Grande', Tahoma, Verdana, Arial, Helvetica, 'Bitstream Vera Sans', sans-serif; font-size: 13px; line-height: 22px; margin-bottom: 22px; outline: 0px; padding: 0px; vertical-align: baseline;"> ถ้าเราไม่กำหนดพารามิเตอร์ตัวที่ 2 จะถือว่าเราไม่เอาทศนิยม</div> <h2 style="background-color: white; border: 0px; clear: both; color: #333333; font-family: Arial, sans-serif; font-size: 19px; line-height: 22px; margin: 0px; outline: 0px; padding: 28px 0px 14px; vertical-align: baseline;"> ตัวอย่างการใช้งาน</h2> <div class="wp_syntax" style="background-color: #f9f9f9; border: 1px solid silver; color: #110000; font-family: 'Lucida Sans Unicode', 'Lucida Grande', Tahoma, Verdana, Arial, Helvetica, 'Bitstream Vera Sans', sans-serif; font-size: 13px; line-height: 22px; margin: 0px 0px 1.5em; outline: 0px; overflow-x: auto; overflow-y: hidden; padding: 0px; vertical-align: baseline; width: 672px;"> <table style="background-color: transparent; background-position: initial initial; background-repeat: initial initial; border-collapse: collapse !important; border-spacing: 0px; border: none !important; font-size: 13px; line-height: 18px; margin: 0px !important; outline: 0px; padding: 0px !important; text-align: left; vertical-align: baseline; width: 672px;"><tbody style="background-color: transparent; border: 0px; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;"> <tr style="background-color: transparent; border: 0px; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;"><td class="code" style="background-image: none !important; border: none !important; line-height: normal !important; margin: 0px; outline: 0px; padding: 0px !important; vertical-align: top !important;"><pre class="php" style="-webkit-box-shadow: rgba(0, 0, 0, 0) 0px 0px 0px !important; background-color: transparent !important; border-bottom-left-radius: 0px !important; border-bottom-right-radius: 0px !important; border-top-left-radius: 0px !important; border-top-right-radius: 0px !important; border: 0px; box-shadow: rgba(0, 0, 0, 0) 0px 0px 0px !important; clear: none !important; float: none !important; font-size: 12px !important; line-height: 16px !important; outline: 0px; overflow: visible !important; padding: 0px !important; vertical-align: baseline; width: auto !important;"><span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span> <span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">1.54</span> <span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">//2</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span> <span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">1.216</span> <span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span><span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">2</span> <span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">//1.22</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span> <span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">-</span><span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">1.555</span> <span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span><span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">2</span> <span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">//-1.56</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span> <span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">-</span><span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">1.213</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span><span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">2</span> <span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">//-1.21</span></pre> </td></tr> </tbody></table> </div> <div style="background-color: white; border: 0px; color: #333333; font-family: 'Lucida Sans Unicode', 'Lucida Grande', Tahoma, Verdana, Arial, Helvetica, 'Bitstream Vera Sans', sans-serif; font-size: 13px; line-height: 22px; margin-bottom: 22px; outline: 0px; padding: 0px; vertical-align: baseline;"> ถ้าเป็น PHP เวอร์ชั่น 5.3.0 ขึ้นไป ฟังก์ชั่นนี้จะเพิ่มพารามิเตอร์ขึ้นมาอีก 1 ตัว คือ mode เราสามารถกำหนดได้ด้วยตัวเราเองเลยว่า ถ้าถึง 5 จะให้ปัดขึ้นหรือปัดลงก็ได้</div> <div class="wp_syntax" style="background-color: #f9f9f9; border: 1px solid silver; color: #110000; font-family: 'Lucida Sans Unicode', 'Lucida Grande', Tahoma, Verdana, Arial, Helvetica, 'Bitstream Vera Sans', sans-serif; font-size: 13px; line-height: 22px; margin: 0px 0px 1.5em; outline: 0px; overflow-x: auto; overflow-y: hidden; padding: 0px; vertical-align: baseline; width: 672px;"> <table style="background-color: transparent; background-position: initial initial; background-repeat: initial initial; border-collapse: collapse !important; border-spacing: 0px; border: none !important; font-size: 13px; line-height: 18px; margin: 0px !important; outline: 0px; padding: 0px !important; text-align: left; vertical-align: baseline; width: 672px;"><tbody style="background-color: transparent; border: 0px; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;"> <tr style="background-color: transparent; border: 0px; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;"><td class="code" style="background-image: none !important; border: none !important; line-height: normal !important; margin: 0px; outline: 0px; padding: 0px !important; vertical-align: top !important;"><pre class="php" style="-webkit-box-shadow: rgba(0, 0, 0, 0) 0px 0px 0px !important; background-color: transparent !important; border-bottom-left-radius: 0px !important; border-bottom-right-radius: 0px !important; border-top-left-radius: 0px !important; border-top-right-radius: 0px !important; border: 0px; box-shadow: rgba(0, 0, 0, 0) 0px 0px 0px !important; clear: none !important; float: none !important; font-size: 12px !important; line-height: 16px !important; outline: 0px; overflow: visible !important; padding: 0px !important; vertical-align: baseline; width: auto !important;"><span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span> ตัวเลข <span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">[</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> จำนวนทศนิยม <span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">=</span> <span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">0</span> <span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">[</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> int <span style="background-color: transparent; border: 0px; color: #000088; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">$mode</span> <span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">=</span> PHP_ROUND_HALF_UP <span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">]</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">]</span> <span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span></pre> </td></tr> </tbody></table> </div> <div style="background-color: white; border: 0px; color: #333333; font-family: 'Lucida Sans Unicode', 'Lucida Grande', Tahoma, Verdana, Arial, Helvetica, 'Bitstream Vera Sans', sans-serif; font-size: 13px; line-height: 22px; margin-bottom: 22px; outline: 0px; padding: 0px; vertical-align: baseline;"> mode จะประกอบไปด้วย</div> <div class="wp_syntax" style="background-color: #f9f9f9; border: 1px solid silver; color: #110000; font-family: 'Lucida Sans Unicode', 'Lucida Grande', Tahoma, Verdana, Arial, Helvetica, 'Bitstream Vera Sans', sans-serif; font-size: 13px; line-height: 22px; margin: 0px 0px 1.5em; outline: 0px; overflow-x: auto; overflow-y: hidden; padding: 0px; vertical-align: baseline; width: 672px;"> <table style="background-color: transparent; background-position: initial initial; background-repeat: initial initial; border-collapse: collapse !important; border-spacing: 0px; border: none !important; font-size: 13px; line-height: 18px; margin: 0px !important; outline: 0px; padding: 0px !important; text-align: left; vertical-align: baseline; width: 672px;"><tbody style="background-color: transparent; border: 0px; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;"> <tr style="background-color: transparent; border: 0px; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;"><td class="code" style="background-image: none !important; border: none !important; line-height: normal !important; margin: 0px; outline: 0px; padding: 0px !important; vertical-align: top !important;"><pre class="text" style="-webkit-box-shadow: rgba(0, 0, 0, 0) 0px 0px 0px !important; background-color: transparent !important; border-bottom-left-radius: 0px !important; border-bottom-right-radius: 0px !important; border-top-left-radius: 0px !important; border-top-right-radius: 0px !important; border: 0px; box-shadow: rgba(0, 0, 0, 0) 0px 0px 0px !important; clear: none !important; float: none !important; font-size: 12px !important; line-height: 16px !important; outline: 0px; overflow: visible !important; padding: 0px !important; vertical-align: baseline; width: auto !important;">PHP_ROUND_HALF_UP : ถึง 5 ปัดขึ้น PHP_ROUND_HALF_DOWN : ต่อให้ถึง 5 ก็ปัดลง PHP_ROUND_HALF_EVEN : จำนวนเต็มเป็นเลขคี่และถึง 5 ปัดขึ้น PHP_ROUND_HALF_ODD : จำนวนเต็มเป็นเลขคู่และถึง 5 ปัดขึ้น</pre> </td></tr> </tbody></table> </div> <h2 style="background-color: white; border: 0px; clear: both; color: #333333; font-family: Arial, sans-serif; font-size: 19px; line-height: 22px; margin: 0px; outline: 0px; padding: 28px 0px 14px; vertical-align: baseline;"> ตัวอย่างการใช้งาน</h2> <div class="wp_syntax" style="background-color: #f9f9f9; border: 1px solid silver; color: #110000; font-family: 'Lucida Sans Unicode', 'Lucida Grande', Tahoma, Verdana, Arial, Helvetica, 'Bitstream Vera Sans', sans-serif; font-size: 13px; line-height: 22px; margin: 0px 0px 1.5em; outline: 0px; overflow-x: auto; overflow-y: hidden; padding: 0px; vertical-align: baseline; width: 672px;"> <table style="background-color: transparent; background-position: initial initial; background-repeat: initial initial; border-collapse: collapse !important; border-spacing: 0px; border: none !important; font-size: 13px; line-height: 18px; margin: 0px !important; outline: 0px; padding: 0px !important; text-align: left; vertical-align: baseline; width: 672px;"><tbody style="background-color: transparent; border: 0px; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;"> <tr style="background-color: transparent; border: 0px; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;"><td class="code" style="background-image: none !important; border: none !important; line-height: normal !important; margin: 0px; outline: 0px; padding: 0px !important; vertical-align: top !important;"><pre class="php" style="-webkit-box-shadow: rgba(0, 0, 0, 0) 0px 0px 0px !important; background-color: transparent !important; border-bottom-left-radius: 0px !important; border-bottom-right-radius: 0px !important; border-top-left-radius: 0px !important; border-top-right-radius: 0px !important; border: 0px; box-shadow: rgba(0, 0, 0, 0) 0px 0px 0px !important; clear: none !important; float: none !important; font-size: 12px !important; line-height: 16px !important; outline: 0px; overflow: visible !important; padding: 0px !important; vertical-align: baseline; width: auto !important;"><span style="background-color: transparent; border: 0px; font-weight: bold; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;"><?php</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span><span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">3.4</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">// 3</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span><span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">3.5</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">// 4</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span><span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">3.6</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">// 4</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span><span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">3.6</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> <span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">0</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">// 4</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span><span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">1.95583</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> <span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">2</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">// 1.96</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span><span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">1241757</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> <span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">-</span><span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">3</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">// 1242000</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span><span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">5.045</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> <span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">2</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">// 5.05</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span><span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">5.055</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> <span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">2</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">// 5.06</span> <span style="background-color: transparent; border: 0px; font-weight: bold; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">?></span></pre> </td></tr> </tbody></table> </div> <div class="wp_syntax" style="background-color: #f9f9f9; border: 1px solid silver; color: #110000; font-family: 'Lucida Sans Unicode', 'Lucida Grande', Tahoma, Verdana, Arial, Helvetica, 'Bitstream Vera Sans', sans-serif; font-size: 13px; line-height: 22px; margin: 0px 0px 1.5em; outline: 0px; overflow-x: auto; overflow-y: hidden; padding: 0px; vertical-align: baseline; width: 672px;"> <table style="background-color: transparent; background-position: initial initial; background-repeat: initial initial; border-collapse: collapse !important; border-spacing: 0px; border: none !important; font-size: 13px; line-height: 18px; margin: 0px !important; outline: 0px; padding: 0px !important; text-align: left; vertical-align: baseline; width: 672px;"><tbody style="background-color: transparent; border: 0px; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;"> <tr style="background-color: transparent; border: 0px; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;"><td class="code" style="background-image: none !important; border: none !important; line-height: normal !important; margin: 0px; outline: 0px; padding: 0px !important; vertical-align: top !important;"><pre class="php" style="-webkit-box-shadow: rgba(0, 0, 0, 0) 0px 0px 0px !important; background-color: transparent !important; border-bottom-left-radius: 0px !important; border-bottom-right-radius: 0px !important; border-top-left-radius: 0px !important; border-top-right-radius: 0px !important; border: 0px; box-shadow: rgba(0, 0, 0, 0) 0px 0px 0px !important; clear: none !important; float: none !important; font-size: 12px !important; line-height: 16px !important; outline: 0px; overflow: visible !important; padding: 0px !important; vertical-align: baseline; width: auto !important;"><span style="background-color: transparent; border: 0px; font-weight: bold; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;"><?php</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span><span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">9.5</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> <span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">0</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> PHP_ROUND_HALF_UP<span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">// 10</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span><span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">9.5</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> <span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">0</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> PHP_ROUND_HALF_DOWN<span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">// 9</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span><span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">9.5</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> <span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">0</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> PHP_ROUND_HALF_EVEN<span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">// 10</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span><span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">9.5</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> <span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">0</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> PHP_ROUND_HALF_ODD<span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">// 9</span>   <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span><span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">8.5</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> <span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">0</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> PHP_ROUND_HALF_UP<span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">// 9</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span><span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">8.5</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> <span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">0</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> PHP_ROUND_HALF_DOWN<span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">// 8</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span><span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">8.5</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> <span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">0</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> PHP_ROUND_HALF_EVEN<span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">// 8</span> <span style="background-color: transparent; border: 0px; color: #b1b100; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">echo</span> <span style="background-color: transparent; border: 0px; color: #990000; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">round</span><span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">(</span><span style="background-color: transparent; border: 0px; color: purple; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">8.5</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> <span style="background-color: transparent; border: 0px; color: #cc66cc; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">0</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">,</span> PHP_ROUND_HALF_ODD<span style="background-color: transparent; border: 0px; color: #009900; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">)</span><span style="background-color: transparent; border: 0px; color: #339933; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">;</span> <span style="background-color: transparent; border: 0px; color: #666666; font-style: italic; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">// 9</span> <span style="background-color: transparent; border: 0px; font-weight: bold; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">?></span></pre> </td></tr> </tbody></table> </div>

ฟังก์ชั่นของ PHP ที่ใช้สำหรับปัดเศษ

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