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<?php $a = preg_match('#^https://www.youtube.com/watch\?v=(.*)#','https://www.youtube.com/watch?v=Ex9huC9uUg8&feature=youtube_gdata', $matches); var_dump($matches);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [0]=> string(65) "https://www.youtube.com/watch?v=Ex9huC9uUg8&feature=youtube_gdata" [1]=> string(33) "Ex9huC9uUg8&feature=youtube_gdata" }

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