youtube embed code with PHP - php

Question

I have created a blog in php. Users can write something and post it. If this includes a web address then a link automated is created using this :
<?php
//...code
$row['comment'] = preg_replace('#(https?://([-\w.]+[-\w])+(:\d+)?(/([\w-.~:/?#\[\]\#!$&\'()*+,;=%]*)?)?)#', '<font color="#69aa35">$1</font>', $row['comment']);
?>
Using this in posts, text posted successfuly and web address displayed in a link format inside text. Any idea how can I change this, so that if there is a link of youtube, then a youtube frame to be created. For example in facebook, when you post a youtube address, a youtube frame created and posted instead of a link.

Answer 1

I have improved my answer and tested this code:
<?php
// This is your comment string containing the youtube link
$string="Here is a link - https://www.youtube.com/watch?v=LJHFXenOPi4";
// This will remove all links from the input string
preg_match('/[a-zA-Z]+:\/\/[0-9a-zA-Z;.\/?:#=_#&%~,+$]+/', $string, $matches);
foreach($matches as $url){
// Parse each url within the comment data
$input = parse_url($url);
if ($input['host'] == 'youtube.com' || $input['host'] == 'www.youtube.com' ) {
// If it is a youtube link, then parse the get variables
parse_str(parse_url($url, PHP_URL_QUERY), $variables);
// Echo out the iframe with the relevant video ID
echo '<iframe width="560" height="315" src="//www.youtube.com/embed/'.$variables['v'].'" frameborder="0" allowfullscreen></iframe>';
}
}
?>
I hope this is what you were looking for, it has worked for me on a few tests

Answer 2

You know the solution don't you? :) If the snippet contains youtube.com URL, then using the same pattern matching you can replace it with a youtube embed tag :)
Basically it will be something like this in pseudo-code.
Check the comment pasted to see if youtube URL present (modify the same regex you are using for finding URL, just make it specific for youtube)
If yes, then replace it with:
<iframe type="text/html"
width="640"
height="385"
src="<youtube URL>"
frameborder="0">
</iframe>