PHP preg_replace certrain字符串

Question

I have several of these tags in a text document (stored in $content) with a lot of other content as well:

[[tag:author|id:6329]]

And I've been trying to replace all of these tags with a given id (in this case 6329) with another string.

$id = 6329;
$replacement = $this->format($id);
$pattern = "/(\[\[tag:author|id:".$id."\]\])/";
preg_replace($pattern, $replacement, $content);

Although this does not seem to work, and I've been tearing my hair out for the last couple of hours. Can anyone see the error? Many thanks.

Answer 1

You need to escape | too, and not necessary to wrap it with () .

Try:

$pattern = "/\[\[tag:author\|id:".$id."\]\]/";