交换所有YouTube网址以通过preg_replace()嵌入 [英] Swap all youtube urls to embed via preg_replace()

问题描述

您好，我正在尝试将youtube链接转换为嵌入代码.

Hello I'm trying to convert youtube links into embed code.

这就是我所拥有的:

<?php

$text = $post->text;

     $search = '#<a(.*?)(?:href="https?://)?(?:www\.)?(?:youtu\.be/|youtube\.com(?:/embed/|/v/|/watch?.*?v=))([\w\-]{10,12}).*$#x';
     $replace = '<center><iframe width="560" height="315" src="http://www.youtube.com/embed/$2" frameborder="0" allowfullscreen></iframe></center>';
     $text = preg_replace($search, $replace, $text);


echo $text;
?>

它适用于一个链接.但是，如果我加两个，它将只交换最后一次出现的时间.我必须更改什么?

It works for one link. However if I add two, it will only swap the last occurrence. What do I have to change?

推荐答案

您没有正确处理字符串的结尾.删除$，并用结束标签</a>代替.这将解决它.

You're not handling the end of the string properly. Remove the $, and replace it with the closing tag </a>. this will fix it.

 $search = '#<a(.*?)(?:href="https?://)?(?:www\.)?(?:youtu\.be/|youtube\.com(?:/embed/|/v/|/watch?.*?v=))([\w\-]{10,12}).*<\/a>#x';
 $replace = '<center><iframe width="560" height="315" src="http://www.youtube.com/embed/$2" frameborder="0" allowfullscreen></iframe></center>';
 $text = preg_replace($search, $replace, $text);

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