Reads out attributes foo="bar" octocat as two elements (foo => bar and octocat => )

regex_attributes.php

<?php
  function regex_attributes( &$element ) {
    $matches = array();
    $pattern = '/\s*(?P<key>[^\s=\'"]+)(?:=(?:([\'"])(?P<value>[^\'"]+)[\'"])|\s|$)\s*/sm';
    if ( !preg_match_all( $pattern, $element->attributes_raw, $matches, PREG_OFFSET_CAPTURE ) )
	    return;
  	
    foreach ( $matches[0] as $key => $match )
  		$element->attributes[ $matches['key'][$key][0] ] = $matches['value'][$key][0];
  }
?>