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Setting up XAMPP: General Notes

Setting up XAMPP is not terribly difficult or time-consuming. It lets you test your website at a special URL, http://localhost/, that makes it possible to use root-relative paths, run PHP scripts, and do other kinds of things your live website will do.
Windows instructions immediately follow; Mac users can jump right to the OS X instructions.

XAMPP Setup: Windows



  1. Download either the ZIP or the 7zip archive of XAMPP for Windows from the XAMPP sitedo not download the installer. The 7zip archive is smaller, so it downloads faster; but it may take longer to unzip, up to 10 or 15 minutes, depending on the speed of your computer.
  2. Unzip the ZIP or 7zip archive; if you don’t have an unzipping utility, try 7-Zip.
  3. Copy the unzipped xampp folder to the root of your USB drive (in other words, don’t place it inside of another folder). If your unzipping program has created a folder that has xampp inside of it (e.g., some unzipping programs will create a folder like xampp-win32-1.7.4-VC6/), move just the xamppfolder to the root of your drive. Depending on the speed of your USB drive, that, too, make take a little while, too (15 or 20 minutes).
    Screenshot showing xampp folder in the root of a USB drive
    Windows XP screenshot of the xampp folder in its proper place: in the root of a USB drive (in this case, the USB drive’s letter is F:).
  4. Load XAMPP by double-clicking on the xampp folder and finding and then double-clicking the xampp-control.exe file. (If you don’t see the .exe extension, the file will still work—but you should Google for show file extensions and the name of your operating system (Windows 7, Windows Vista, Windows XP; see pages 45-47 in the book).
  5. Start the Apache web server by clicking the Start button on the XAMPP Control Panel. Windows Vista and Windows 7 users may get a warning about Windows Firewall; click Cancel on any firewall warning windows that pop up.
    Screenshot showing the XAMPP control panel and Apache running
    Windows XP screenshot of the XAMPP Control Panel with the Apache web server running.
  6. Test that XAMPP is running properly by going to the URL http://localhost/ in your browser (type the whole thing, including the http:// part; notice there’s no www. or .com). You should see the XAMPP welcome screen if all is working correctly.
    Screenshot showing the XAMPP splash screen
    Windows XP screenshot of the XAMPP splash screen in Firefox.
  7. Some users may get an error from XAMPP that states another service is using Port 80 (Skype, for example, is known to use that port.) If everything is working for you, skip to the next step. If you get an error like that, use your text editor (like Notepad++) to open up the httpd.conf file. Go to the xampp folder, then into the apache folder, and finally into the conf folder, where you will find the the httpd.conf file. Locate the line in the file that reads Listen 80 using the Find function in your text editor. Around line 37, you will find a block of text that looks like:
    #
    # Listen: Allows you to bind Apache to specific IP addresses and/or
    # ports, instead of the default. See also the <VirtualHost>
    # directive.
    #
    # Change this to Listen on specific IP addresses as shown below to 
    # prevent Apache from glomming onto all bound IP addresses.
    #
    #Listen 0.0.0.0:80
    #Listen [::]:80
    Listen 80
    
    
    Comment out the line that reads Listen 80 by putting a hash (#) in front of it; below that line, write your own line that reads Listen 8000. This part of your file will now look like:
    #
    # Listen: Allows you to bind Apache to specific IP addresses and/or
    # ports, instead of the default. See also the <VirtualHost>
    # directive.
    #
    # Change this to Listen on specific IP addresses as shown below to 
    # prevent Apache from glomming onto all bound IP addresses.
    #
    #Listen 0.0.0.0:80
    #Listen [::]:80
    #Listen 80
    Listen 8000
    
    
    Start or stop and start Apache from the XAMPP Control Panel. Point your browser tohttp://localhost:8000/, and you should see the XAMPP welcome screen. Remember to usehttp://localhost:8000/ instead of http://localhost/ when you’re developing your site.
  8. To develop your own site, you’ll want to rename the existing htdocs folder inside of the xampp folder to htdocs-original. (You can rename it back if you need, for example, to configure the MySQL database for use with WordPress development.) Then create your own new htdocs folder for your site, or download, unzip, and copy over the htdocs folder from the Rapid Prototyping Kit and get to work on your site. (You might want to stop and restart Apache in the XAMPP Control Panel before you start working.)

XAMPP Setup: Mac OS X

Unfortunately, the OS X version of XAMPP will not run on a USB drive; you must have administrative rights on any Mac that you wish to install and run XAMPP on. These instructions have been tested on OS X Leopard and OS X Snow Leopard using XAMPP version 1.7.3. Please contact the author if you run into any problems so that these instructions can be improved, if necessary.
  1. Download XAMPP for Mac OS X (Universal Binary) from the XAMPP site. Double-click the installer, and drag the XAMPP folder to your Applications folder. (You may have to enter your adminstrative username and/or password).
  2. Find the XAMPP Control application, which will be in an XAMPP folder inside of your Applicationsfolder. Double-click the XAMPP Control application to launch.
  3. A little Control window will pop up; click the Start button next to Apache. You will be prompted to enter your administrative username and/or password.
    Screenshot Mac OS X XAMPP Control window
    Mac OS X screenshot of the XAMPP Control window, with Apache running.
  4. Open your browser to http://localhost/; you should see the XAMPP splash page. If you are getting an error about another service using Port 80, see the end of this document.
  5. Now things get a little complex. The Applications folder on a Mac is a restricted area of sorts, so it’s important to configure XAMPP to read from an htdocs folder than you can write to from your user account easily.
  6. Go to your home folder in a Finder window; Look for the little house icon with your username next to it, and click on it.
  7. In the Finder window, create a new htdocs folder (File > New Folder from the Finder menu). Or, download and unzip the Rapid Prototyping Kit (RPK) and copy its htdocs folder to your home folder.
  8. In your favorite text editor (like TextWrangler), create a new text file and put a little line of text in it, like:
    Hello there! This is just to test XAMPP.
    Save the file as hello.txt, inside of the htdocs folder you created or moved over from the RPK. The hello.txt will be for testing your new XAMPP configuration.
  9. Now use your text editor to open the XAMPP httpd.conf file. This contains the Apache Web server configuration that XAMPP uses. Go to the Applications folder, then XAMPP, then etc; you'll seehttpd.conf listed there. Open it.
  10. Once you’ve opened the httpd.conf file, you should immediately make a copy of it, just in case you make a mistake. Choose File > Save As... in your editor, and save the file as httpd.conf.original. You will probably be prompted for your administrative username and password.
  11. Then, choose File > Save As... again and save as httpd.conf, so that you’re back to editing thehttpd.conf that XAMPP reads (and not the httpd.conf.original file that you can use in an emergency).
  12. Now to edit the httpd.conf file. Use the Find function in TextWrangler (Search > Find...) and search for the text DocumentRoot (one word, no space). TextWrangler should take you to around line 174 of the httpd.conf file, where you will see:
    #
    # DocumentRoot: The directory out of which you will serve your
    # documents. By default, all requests are taken from this directory, but
    # symbolic links and aliases may be used to point to other locations.
    #
    DocumentRoot "/Applications/XAMPP/xamppfiles/htdocs"
    
    #
  13. Comment out the DocumentRoot line that’s there by putting a hash (#) in front of it. Then, on the line below the one you comment out, write a new DocumentRoot line, replacing yourusername as in the example below with your real username on your Mac. The DocumentRoot part of your file should now look like this:
    # DocumentRoot: The directory out of which you will serve your
    # documents. By default, all requests are taken from this directory, but
    # symbolic links and aliases may be used to point to other locations.
    #
    # DocumentRoot "/Applications/XAMPP/xamppfiles/htdocs"
    DocumentRoot "/Users/yourusername/htdocs"
    
    #
  14. Next, scroll down a little further (about 30 lines) in the httpd.conf, where you will see:
    #
    # This should be changed to whatever you set DocumentRoot to.
    #
    <Directory "/Applications/XAMPP/xamppfiles/htdocs">
        #
        # Possible values for the Options directive are "None", "All",
        # or any combination of:
        #   Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews
        #
        # Note that "MultiViews" must be named *explicitly* --- "Options All"
        # doesn't give it to you.
        #
    
    
  15. As you did with the DocumentRoot line, you’ll comment out the <Directory ... line by inserting a hash (#) in front of it. Start a new line below it, following the pattern of the line you commented out, and write the same path you did in the DocumentRoot line above. This part of your file should now look like:
    #
    # This should be changed to whatever you set DocumentRoot to.
    #
    # <Directory "/Applications/XAMPP/xamppfiles/htdocs">
    <Directory "/Users/yourusername/htdocs">
        #
        # Possible values for the Options directive are "None", "All",
        # or any combination of:
        #   Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews
        #
        # Note that "MultiViews" must be named *explicitly* --- "Options All"
        # doesn't give it to you.
        #
    
    
  16. Save the file as httpd.conf; you might have to enter your administrative username and password again.
  17. Now the moment of truth: if you left XAMPP running, stop and then start it again from the XAMPP Control window. Point your browser to http://localhost/hello.txt, the text file you created; you should see your simple “Hello there! This is just to test XAMPP.” message. If you do, go ahead and delete the hello.txt file. You are now ready to start building your site, and testing it on a local web server.
Some users may get an error from XAMPP that states another service is using Port 80 (Skype, for example, is known to use that port.) If you get an error like that, open up the httpd.conf file, and search for Listen 80 using the find function. Around line 30, you will find a block of text that looks like:
#
# Listen: Allows you to bind Apache to specific IP addresses and/or
# ports, instead of the default. See also the <VirtualHost>
# directive.
#
# Change this to Listen on specific IP addresses as shown below to 
# prevent Apache from glomming onto all bound IP addresses.
#
#Listen 12.34.56.78:80
Listen 80

Comment out the line that reads Listen 80 by putting a hash (#) in front of it; below that line, write your own line that reads Listen 8000. This part of your file will now look like:
#
# Listen: Allows you to bind Apache to specific IP addresses and/or
# ports, instead of the default. See also the <VirtualHost>
# directive.
#
# Change this to Listen on specific IP addresses as shown below to 
# prevent Apache from glomming onto all bound IP addresses.
#
#Listen 12.34.56.78:80
#Listen 80
Listen 8000

Start or stop and start XAMPP from its little Control window. Point your browser tohttp://localhost:8000/hello.txt, and you should see your see your simple “Hello there! This is just to test XAMPP.” message. If you do, go ahead and delete the hello.txt file. Remember to usehttp://localhost:8000/ instead of http://localhost/ when you’re developing your site.
 
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