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<?php function parse_yturl($url) { $pattern = '#^(?:https?://)?(?:www\.|m\.)?(?:youtu\.be/|youtube\.com(?:/embed/|/v/|/watch\?v=|/watch\?.+&v=))([\w-]{11})(?:.+)?$#x'; preg_match($pattern, $url, $matches); return isset($matches[1]) ? $matches[1] : false; } var_dump(parse_yturl("https://m.youtube.com/watch?v=p-e2G_VcTms&feature=g-logo&context=G29aead6FOAAAAAAABAA")); var_dump(parse_yturl("https://www.youtube.com/watch?v=p-e2G_VcTms&feature=g-logo&context=G29aead6FOAAAAAAABAA"));
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.21, 8.3.0 - 8.3.9
string(11) "p-e2G_VcTms" string(11) "p-e2G_VcTms"

preferences:
172.22 ms | 405 KiB | 392 Q