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copied!<p>The <code>RewriteCond</code> <em><a href="https://httpd.apache.org/docs/2.0/mod/mod_rewrite.html#rewritecond" rel="nofollow">test string</a></em> contains the server-variable <code>%{THE_REQUEST}</code> which takes the form:</p> <pre><code>GET /index.php HTTP/1.1 or POST /login.php HTTP/1.1 </code></pre> <p><br></p> <p>The <em>condition pattern</em> <code>^.*/index.php</code> contains a regular expression that matches anything with <code>/index.php</code> in it...</p> <p>The <code>^</code> marks the start of the string, the <code>.*</code> matches zero-or-more instances of <em>any</em> character and the <code>/index.php</code> is self-explanatory.</p> <p>So, any URL which contains <code>/index.php</code> will be matched. If the <em>condition pattern</em> ended with a <code>$</code> symbol (the end-of-string symbol), then it wouldn't match any instance of <code>%{THE_REQUEST}</code> as all instances of <code>%{THE_REQUEST}</code> contain the HTTP request type after the URL.</p> <p><br></p> <p>The <code>RewriteRule</code> is then used to do the 301 redirect as you describe, but importantly, the <a href="https://httpd.apache.org/docs/2.0/mod/mod_rewrite.html#rewriterule" rel="nofollow">RewriteRule directive</a> matches it's <em>pattern</em> against the current URL (and not against the whole request string like the RewriteCond does in this example).</p> <p>The RewriteRule <em>pattern</em> <code>^(.*)/index.php</code> captures (denoted by the brackets) everything in front of <code>/index.php</code> and then creates a 301 redirect that removes the <code>/index.php</code>.</p> <p><br></p> <p>@anubhava has pointed out that if you visit <code>website.com/index.php</code> then the RewriteRule won't work, because the URL it matches against does not include the leading <code>/</code>.</p> <p><br></p> <p>Those two lines can be rewritten as:</p> <pre><code>RewriteRule ^(.*)index.php$ http://www.mydomain.com/$1 [R=301,L,NC] </code></pre> <p>Then, if you visit <code>http://website.com/index.php</code> then the <code>(.*)</code> part of the <em>pattern</em> will match an empty string.</p> <p>Or if you visit <code>http://website.com/sub/folder/index.php</code> then the <code>(.*)</code> part of the <em>pattern</em> will match <code>sub/folder/</code>, which is then referenced in the <em>substitution</em> string by <code>$1</code>.</p> <p><br></p> <p>Remember that every redirect works by telling the browser to request a new URL, and each request gets re-processed by the htaccess, so if there are other rules that allow viewing <code>index.php</code> then that could explain why you can see some URLs containing index.php.</p>

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