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run code in 150+ php & hhvm versions
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<?php function parse_yturl($url) { $pattern = '#^(?:https?://)?(?:www\.)?(?:youtu\.be/|youtube\.com(?:/embed/|/v/|/watch\?v=|/watch\?.+&v=))([\w-]{11})(?:.+)?$#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"));
based on Tgkt0
Output for 4.3.0 - 7.1.0
bool(false)