WB 2.08.x

<?php

/**

 * Convert full qualified, local URLs into relative URLs

 * @param string $content

 * @return string

 */

	function doFilterRelUrl($content) {

		$content = preg_replace_callback(

				'/((?:href|src)\s*=\s*")([^\"]*?)(")/iU',

				create_function('$matches',

				    '$retval = $matches[0]; '.

		            '$h = parse_url($matches[2], PHP_URL_HOST); '.

					'if(isset($h) && $h != \'\') { '.

					'if(stripos(WB_URL, $h) !== false) { '.

					'$a = parse_url($matches[2]); '.

					'$p = (isset($a[\'path\']) ? $a[\'path\'] : \'\'); '.

					'$q = (isset($a[\'query\']) ? \'?\'.$a[\'query\'] : \'\'); '.

					'$f = (isset($a[\'fragment\']) ? \'#\'.$a[\'fragment\'] : \'\'); '.

					'$p .= ($q.$f); '.

					'$retval = $matches[1]."/".(isset($p) ? ltrim(str_replace("//", "/", $p), "/") : "").$matches[3]; '.

					'}} return $retval;'),

		        $content);

		return $content;

	}

?>