Blacklist words in PHP Array

The following code can be used to not display php array results that contain certain “blacklisted” words.

$a = array("orange", "purple", "red", "blue");
$clean = Array();
$blacklist = '/(oranges|red)/';
foreach($a as $b) {
	if(!preg_match($blacklist, $b)) {
		$clean[] = $b;
	}
}

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