Parse changelog using regular expression.

parse_changelog.php

<?php
$changelog = <<<EOL
ADDED-Complete new frontend default theme. Optimised to easily blend into any Joomla template.
added: Fully refactored administrator to fully match Joomla 1.5's native look and feel
Wuuut? Testing, testing.
fixed DOCLlink, search plugin and modules are now included in the package and installed automatically
improved   Performed a full security audit
improved   
added - Performance optimizations 
EOL;

$result = preg_match_all('/^(fixed|added|improved)[ :;\-]+\b(.+)$/im', $changelog, $matches, PREG_SET_ORDER);

echo "$result matches found!".PHP_EOL;

foreach($matches as $match)
{
	echo strtoupper($match[1]) . ' - ' . $match[2] . PHP_EOL;
}