PHP 用锚标记替换字符串中的 URL

Question

I'm trying to parse a string that contains links in it. I'm happy to specify the format that they come across in, however normal HTML tags are being stripped out in transit.

I'm suggesting the following format:

[url=https://test.com]my link[/url]

becomes:

<a href="https://test.com" target="_blank">my link</a>

with no other attributes necessary.

I have the following preg replace but it's not working

$result = preg_replace("/\[\burl\b=[1-9a-zA-Z:\.\-\/_]*?[\]]*?\[\/\burl\b\]/", "<a href='$1' target='_blank'>$2</a>", $str);

As soon as I try to get the link/text when building the regex I fall down.

Any help/simplification/other ideas greatly appreciated!

Answer 1

You may consider using

preg_replace('~\[url=([^][\s]+)](.*?)\[/url]~s', "<a href='$1' target='_blank'>$2</a>", $text)

See the PHP demo and the regex demo .

Details

• \[url= - a [url= substring
• ([^][\s]+) - Group 1 ( $1 ): any 1 or more characters other than [ , ] and whitespace
• ] - a ] char
• (.*?) - Group 2 ( $2 ): any zero or more characters, as few as possible
• \[/url] - a [/url] substring.