Filter a set of bad words out of a PHP array

Question

I have a PHP array of about 20,000 names, I need to filter through it and remove any name that has the word job, freelance, or project

Answer 1

Personally, I would do something like this:

$badWords = ['job', 'freelance', 'project'];
$names = ['JoomlaFreelance', 'PhillyWebJobs', 'web2project', 'cleanname'];

// Escape characters with special meaning in regular expressions.
$quotedBadWords = array_map(function($word) {
    return preg_quote($word, '/');
}, $badWords);

// Create the regular expression.
$badWordsRegex = implode('|', $quotedBadWords);

// Filter out any names that match the bad words.
$cleanNames = array_filter($names, function($name) use ($badWordsRegex) {
    return preg_match('/' . $badWordsRegex . '/i', $name) === FALSE;
});