在 [code] 和 [php] 标签中查找 URL [英] Find URL Inside a [code] and [php] tag

问题描述

我的字符串是这样的:

$string = '
Link_1: [code]This is a textual line.
www.google.com
This is a textual line.[/code]

Link_2: [php]This is a textual line.
www.google.com
This is a textual line.[/php]
';

我想使用 REGEX 以便我可以替换此字符串中的 URL 并且应该像这样返回:

I want to use a REGEX so that I could replace the URL inside this string and should return like this:

Link_1: [code]This is a textual line.
LINK HIDDEN
This is a textual line.[/code]

Link_2: [php]This is a textual line.
LINK HIDDEN
This is a textual line.[/php]

我是一个 REGEX 菜鸟，所以请帮我找到一个正确的 REGEX 以获得上述结果，谢谢

I am a REGEX noob so please help me to find a correct REGEX to get the result mentioned above, thank you

推荐答案

使用正向前瞻来检查将要匹配的链接后是否没有结束 php 或代码标记.

Use a positive lookahead to check for the links which are going to be matched wouldn't be followed by a closing php or code tag.

$content = <<<EOS
Link_1: [code]This is a textual line.
www.google.com
This is a textual line.[/code]

Link_2: [php]This is a textual line.
www.google.com
This is a textual line.[/php]
EOS;
$needle = '~(?:https?://)?(?:www\.)(?:[^.\s]+)(?:\.[^.\n\s]+)*\.\w{2,4}(?=(?:(?!\[/?(?:code|php)])[\S\s])*\[/(?:code|php)])~m';
echo preg_replace($needle,'LINK HIDDEN',$content);

输出:

Link_1: [code]This is a textual line.
LINK HIDDEN
This is a textual line.[/code]

Link_2: [php]This is a textual line.
LINK HIDDEN
This is a textual line.[/php]

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