Find youtube Link in PHP string and Convert it into embed code?

Question

Find a Youtube video link in PHP String and convert it into Embed Code?

Embed Code:

<iframe width="420" height="315" src="//www.youtube.com/embed/0GfCP5CWHO0" frameborder="0" allowfullscreen></iframe>

PHP Code / String:

<?php echo $post_details['description']; ?>

Youtube Link:

http://www.youtube.com/watch?v=0GfCP5CWHO0

Answer 1

Try this:

preg_replace("/\s*[a-zA-Z\/\/:\.]*youtube.com\/watch\?v=([a-zA-Z0-9\-_]+)([a-zA-Z0-9\/\*\-\_\?\&\;\%\=\.]*)/i","<iframe width=\"420\" height=\"315\" src=\"//www.youtube.com/embed/$1\" frameborder=\"0\" allowfullscreen></iframe>",$post_details['description']);

Answer 2

There are two types of youtube link for one video:

Example:

$link1 = 'https://www.youtube.com/watch?v=NVcpJZJ60Ao';
$link2 = 'https://www.youtu.be/NVcpJZJ60Ao';

This function handles both:

function getYoutubeEmbedUrl($url)
{
     $shortUrlRegex = '/youtu.be\/([a-zA-Z0-9_-]+)\??/i';
     $longUrlRegex = '/youtube.com\/((?:embed)|(?:watch))((?:\?v\=)|(?:\/))([a-zA-Z0-9_-]+)/i';

    if (preg_match($longUrlRegex, $url, $matches)) {
        $youtube_id = $matches[count($matches) - 1];
    }

    if (preg_match($shortUrlRegex, $url, $matches)) {
        $youtube_id = $matches[count($matches) - 1];
    }
    return 'https://www.youtube.com/embed/' . $youtube_id ;
}

The output of $link1 or $link2 would be the same :

 $output1 = getYoutubeEmbedUrl($link1);
 $output2 = getYoutubeEmbedUrl($link2);
 // output for both:  https://www.youtube.com/embed/NVcpJZJ60Ao

Now you can use the output in iframe!

Answer 3

A little enhancement of Joran's solution to handle also youtube short URL format:

function convertYoutube($string) {
    return preg_replace(
        "/\s*[a-zA-Z\/\/:\.]*youtu(be.com\/watch\?v=|.be\/)([a-zA-Z0-9\-_]+)([a-zA-Z0-9\/\*\-\_\?\&\;\%\=\.]*)/i",
        "<iframe src=\"//www.youtube.com/embed/$2\" allowfullscreen></iframe>",
        $string
    );
}

You can test this function online here