CODEWITHSUNDEEP
phpregexpreg-match
laurenz
laurenz

Reputation: 21

preg_match - need to get a string out of an url

I need to get a string out of some youtube urls looking like that:

http://www.youtube.com/embed/WJlfVjGt6Hg?list=EC1512BD72E7C9FFCA&hl=en_US

I need to get the variables between"../embed/" and "?list=.." (-> WJlfVjGt6Hg ).

The code for the other youtube urls looks like this:

// Checks for YouTube iframe, the new standard since at least 2011
if ( !isset( $matches[1] ) ) {
    preg_match( '#https?://www\.youtube(?:\-nocookie)?\.com/embed/([A-Za-z0-9\-_]+)#', $markup, $matches );}

How can I do that ?

Upvotes: 2

Views: 2072

Answers (3)

Ja͢ck
Ja͢ck

Reputation: 173542

It's the base name of the path from your url:

$url = 'http://www.youtube.com/embed/WJlfVjGt6Hg?list=EC1512BD72E7C9FFCA&hl=en_US';
echo basename(parse_url($url, PHP_URL_PATH));
// WJlfVjGt6Hg

Upvotes: 3

Andy Lester
Andy Lester

Reputation: 93636

Don't use a regular expression. Not every problem that involves a string is best solved with regexes.

Use the parse_url() function, built in to PHP, to break apart the parts for you.

http://php.net/manual/en/function.parse-url.php is the manual page for it. Here's how you use it:

$url = 'http://www.youtube.com/embed/WJlfVjGt6Hg?list=EC1512BD72E7C9FFCA&hl=en_US';

$parts = parse_url( $url );
print_r( $parts );

$path_parts = explode( '/', $parts['path'] );
print_r( $path_parts );

$last_part = $path_parts[count($path_parts)-1];

print "Youtube video ID = $last_part\n";

And when you run that, you get this:

Array
(
    [scheme] => http
    [host] => www.youtube.com
    [path] => /embed/WJlfVjGt6Hg
    [query] => list=EC1512BD72E7C9FFCA&hl=en_US
)
Array
(
    [0] => 
    [1] => embed
    [2] => WJlfVjGt6Hg
)
Youtube video ID = WJlfVjGt6Hg

Upvotes: 1

Mark G.
Mark G.

Reputation: 3260

Hi you could use the following regular expression:

/embed\/([^\?]+)/

A short explanation - this matches all characters after 'embed/' that aren't a question mark, until it finds a question mark.

Here's a sample script which shows you the output you're looking for:

<?php

$test="http://www.youtube.com/embed/WJlfVjGt6Hg?list=EC1512BD72E7C9FFCA&amp;hl=en_US";

$matches = array();
preg_match('/embed\/([^\?]+)/', $test, $matches);
print_r($matches);
// The value we're looking for is in index 1 of the array
echo $matches[1];

Output is:

Array
(
[0] => embed/WJlfVjGt6Hg
[1] => WJlfVjGt6Hg
)
WJlfVjGt6Hg

Upvotes: 0

Related Questions