What's this tutorial about?
In this tutorial I'll show you how to automatically relink your href, src, and action attributes to the current directory.

Say you had about 200-300 links that were like

href="/some-file.php"

That would link them to the root directory.
What if you moved the the files and the script into a different directory, and now you wanted to link them like this

href="/directory/some-file.php"

Well, we have an easy solution.
With some Output Buffering and a Regular Expression you can relink them to the "current directory"

Here's how

<?php

    ob_start('relink');

    function relink ($buffer) {

        $root = dirname($_SERVER['PHP_SELF']);

        return preg_replace('#(href|src|action)=("|'|)/#i', "1=2$root/", $buffer);

    }

?>

<a href="/omfg/onoz/">OMG onoz...</a>

What is Output Buffering? Output Buffering is registered by using

ob_start('some_function_name');

It passed the "output" to the function in the first parameter, called the "buffer".
So in this case, it passes our HTML link to relink(), which will allow us to handle it anyway we want.
What we do is do a preg_replace to change the links and make them relative to the current directory, which in my case is "tutorial-testing".
Try it out, throw the file around in different folders, you will notice it changes each time.

It's pretty easy, and probably the most handy trick there is when it comes to large websites, thanks for reading.