Regex PHP How To Match Inner Part of a String [duplicate]

Question

I need a php regex that will do the following with my original string

<div>The quick jumped over <p>[video=xdf890sfadf]</p> the white fence.</div>

to

<div>The quick jumped over <p><iframe src="http://www.youtube.com/embed/xdf890sfadf?rel=0&amp;vq=hd720" height="365" width="650" allowfullscreen="" frameborder="0"></iframe></p> the white fence.</div>

So what I need do to is pull the video ID out of the any give string of html.

I want to use the preg_replace() function for this, but I'm confused about the proper regex to use with it. Please help.

For your particular format: $hit = preg_match("~youtube\.com/embed/\K[^?#\s]+~",$string,$m); if($hit) { $id = $m[0]; } However, YouTube IDs come in a variety of formats: see this comprehensive answer — zx81
– zx81, Commented Jun 17, 2014 at 0:31

Community · Accepted Answer · 2017-05-23 10:25:05Z

2

A simple search here on SO and should be no problem. Just get it using preg_match(). Consider this example:

$original_string = '<div>The quick jumped over <p>[video=xdf890sfadf]</p> the white fence.</div>';
preg_match('/\[video=([^\]]+)\]/', $original_string, $matches);
if(!empty($matches)) {
    $value = $matches[1];
    $video = $matches[0];
    $new_string = '<div>The quick jumped over <p><iframe src="http://www.youtube.com/embed/'.$value.'?rel=0&amp;vq=hd720" height="365" width="650" allowfullscreen="" frameborder="0"></iframe></p> the white fence.</div>';
    echo $new_string;
}

Note: credit goes to https://stackoverflow.com/a/8935740/1978142

Sample Output

edited May 23, 2017 at 10:25

CommunityBot

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answered Jun 17, 2014 at 0:25

user1978142

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2 Comments

liquidgraph Over a year ago

I need to further clarify: the original string can have square brackets in other areas which must remain unaffected. I need to really match "[video= ]"

user1978142 Over a year ago

@liquidgraph if you want to literaly match that sequence, check the edit

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