- var_dump: documentation ( source)
- array_search: documentation ( source)
- preg_split: documentation ( source)
<?php
$tempStyleArray = preg_split( "/[:;]+/", "width: 569px; height: 26.456692913px; margin: 0px; border: 2px solid black;" );
var_dump($tempStyleArray);
$key = array_search('height', $tempStyleArray);
echo $key;