Плеер

$text = '[video]https://www.youtube.com/watch?v=dG7PFeiqkbU[/video]';

$var = preg_replace('#\[video\](.*?)\[/video\]#si', '<script type="text/javascript" src="http://s3.spruto.org/embed/player.js"></script> <script class="splayer"> var params = {"playlist":[{"title":"Моё видео","posterUrl":"","video":[{"url":"\1"}],"duration":0}],"uiLanguage":"ru","width":"640","height":"360"}; player.embed(params); </script>', $text);

echo $var;