<?php $word = 'Sing'; $urls = ['http://I_like_to_sing.mp3', 'http://Another_song.mp3']; $regex = "/https?:\/\/(?=.*$word).+\.mp3/i"; print_r(array_filter($urls, function ($v) use ($regex) { return preg_match($regex, $v); }));
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Value for `_results` contains invalid data `array`