Creating a PHP function to optimize Javascript file?

[random1]

Hey All ,

 

I already have 2 functions that optimize HTML, CSS but I need one that optimizes/minifies JavaScript files.

 

public function optimizeJavascript($buffer)
{
	/* remove comments */
	$buffer = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $buffer);
	/* remove tabs, spaces, new lines, etc. */
	$buffer = str_replace(array("\r\n", "\r", "\n", "\t",
	'  ', '    ', '    '), '', $buffer);
	/* remove unnecessary spaces */

	return $buffer;
}

 

Any suggestions on what parts of Javascript files can be filtered out of an optimized file?

[RichardRotterdam]

Sounds a bit like you're trying to re-invent the weel. Are you doing this for fun/practive or do you want the best optimized javascript source. If it is the last option you might want to look up "yui compressor" or jsmin.

 

If it is for practice maybe you can write a function that shortens certain variable names.

[bundyxc]

Regardless, our regex buddies might be of more help with this.