Trim all trailing whitespace

Clean up Code

#!/usr/bin/env php
<?php

$files = explode("\n", shell_exec('git ls-files'));

foreach ($files as $file){
	$file = trim(__DIR__ . '/' . $file);
	if (!(substr($file, -4) == 'html' || substr($file, -2) == 'js')) continue;

	$content = file_get_contents($file);

	// trim trailing whitespace
	$content = preg_replace('/[ \t]*$/m', '', $content);

	// `) {` -> `){`
	$content = preg_replace('/\) \{(\s)/', '){$1', $content);

	$content = str_replace(array(
		'if(',
		'for(',
		'while(',
		'switch(',
	), array(
		'if (',
		'for (',
		'while (',
		'switch (',
	), $content);

	file_put_contents($file, $content);
	echo 'Cleaned: ' .$file . PHP_EOL;
}