Question

I am making a video playback website and I need to use a html5 video player to play local videos and youtube api and vimeo api to play vimeo videos. THE problem is I want to filter the link entered by the user for all 3 conditions. I tried some regex as I never used it before but was not successful. Can anyone help me giving a example showing how to separate those links for making 3 conditions

1. taking out the word “youtube” out of a youtube link so that i could make a condition statement

2. same way taking out .mp4 and .ogg extension from the local video so that it can be used to be played in a html5 video player

3. same way extract the word “vimeo” from a vimeo link so that I can use a vimeo api to play vimeo videos.

Can anyone help?

For example we input a youtube link

http://www.youtube.com/watch?v=example

Then how to get the word “youtube” out of this link?

And I uploaded a local video with file name

example.mp4

Then how can I get the extensoon mp4 from that?

Answer 1

This is adapated from a php class I wrote some times ago :

<?php

function identifyService ( $url )
{
    $url = preg_replace('#\#.*$#', '', trim($url));

    $services_regexp = array(
        "#^\w+\.(?P<format>[a-zA-Z0-9]{2,5})#"                     => 'local',
        '#vimeo\.com\/(?P<id>[0-9]*)[\/\?]?#i'                     => 'vimeo',
        '#youtube\.[a-z]{0,5}/.*[\?&]?v(?:\/|=)?(?P<id>[^&]*)#i'   => 'youtube'
    );

    foreach ( $services_regexp as $pattern => $service ) {
        if ( preg_match ( $pattern, $url, $matches ) ) {
            return ( $service === 'local' ) ? $matches['format']  : $service;
        }
    }

    return false;

}


$url = "foo.ogg";
// $url = "bar.mp4";
// $url = "http://www.youtube.com/watch?v=_rqR8_mOp_A";
// $url = "http://vimeo.com/39044814";
$service  = identifyService( $url );
var_dump( $service );


?>

Hope it helps.