YouTube embedding using PHP
The following #PHP code will replace any link to a #YouTube video with an embedded player. Through a single regular expression, it can automatically replace a total of four different URL formats for an embedded video player.
function youTube($string) {
return preg_replace(
'#(http://(www.)?youtube.com)?/(v/|watch\?v\=)([-|~_0-9A-Za-z]+)&?.*?#i',
'<iframe title="YouTube video player" width="480" height="390" src="http://www.youtube.com/embed/$4" frameborder="0" allowfullscreen></iframe>',
$string
);
}Let's try it:
echo youTube('http://www.youtube.com/watch?v=VWsjWCt1PsQ');
echo youTube('http://youtube.com/watch?v=VWsjWCt1PsQ');
echo youTube('http://youtube.com/v/VWsjWCt1PsQ');
echo youTube('http://www.youtube.com/v/VWsjWCt1PsQ');