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Step 1
Download the install file from the PHP website. A link to this site is located in the resources section of this article.
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Step 2
Make a directory on your computer for PHP 5 . Open the folder you want to want to save the directory in. Right-click in the open window. Click "New Folder." Name the folder "PHP" or "php5." For example "c:\php5." Substitute your directory for "c:\php5" whenever it appears in this article.
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Step 3
Locate and move the files from the sub directory Windows created for PHP in Step1 to the directory created in Step 2. Windows normally places the files in "php-5.x.x-Win32." To move the files, click "Edit" and then click "Select All." To copy the files, right-click and choose "Copy" or hold down the "Ctrl" key and the "C" key at the same time. Open your new directory, c:\php5. Hold down the "Ctrl" key and the "V" key at the same time or right-click and choose "Paste."
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Step 4
Find the file "php.ini-recommended" in the directory. Open the file in Notepad. Replace the following if they are not correct. Look for "error_reporting" and change it to "error_reporting = E_ALL & ~E_NOTICE." If your scripts don't work as intended, locate "register_globals" and change it to "register_globals = On." Find "register_argc_argv" and change it to "register_argc_argv = On." If your scripts pass information in strings like index.php?var1=value1&var2=value2, replace "doc_root" with the path to your Apache web directory. For example, "doc_root = C:\Apache2\htdocs." Find 'extension_dir"' and change it to 'extension_dir = "C:\php5\ext".' The SMTP line needs to read "SMTP = smtp.yourISP.com."
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Step 5
Save the edited file in the PHP 5 directory. For example, save as "php.ini" in "c:php5."
