Searching for a javascript function definition within a string using PHP?

[aerotampa]

I'm using Zend_View_Helper_HeadScript to display javascript function definitions in the head of my webpages, and I extended it to get the javascript code from file if desired. What I'd like to know is if there would be an easy way to search the headScript output (basically, a series of xhtml script elements) for a javascript function definition, assuming I got and outputted the contents of javascript files (rather than including the srcs.) I mean, I could search for "function" followed by some function name characters and then "(" but that doesn't account for possible comments in the code. Is there a quickie function for this that is built into PHP that can search for a javascript function definition? Or something else prebuilt?Sample output:\[code\]<script type="text/javascript">// function testMe() {}function otherTest() {alert('Just testing!');}/*function testMe() {}*/</script>\[/code\]Obviously testMe() hasn't really been defined here...For clarity, I'm trying to do something like this:\[code\]<?php$htmlScriptElements = $view->headScript()->toString();$functionName = 'testMe';$file = '/path/to/testMe.js';$type = 'text/javascript';$attrs = array();$getScript = TRUE;if (!js_function_definition_found($functionName, $htmlScriptElements)) { $view->headScript()->appendFile($file, $type, $attrs, $getScript);}\[/code\]The headScript helper is home-brew; if $getScript is true, I use file_get_contents() to get the js content and append that instead of including a js file using a url/src. I realize that it won't find definitions in included js files; I'm fine with that.