PHP Regex replace multiple urls with itself with a return function

Question

I have a site where I need to check and replace a text with href's in it, that's not the problem. But I have to localize the url, that's done with a function, but I can't get it to work together.

My code to replace the links:

$text = "this is a test text blabla <a href="https://example.com/test/">Test</a>";
$pattern = "/(?<=href=(\"|'))[^\"']+(?=(\"|'))+/";
$replace = '${0}';
echo preg_replace($pattern, $replace, $text);

I need to do the localize function over the $replace variable when I'm replacing the text. I know it can be done by using preg_replace_callback, I searched the internet but can't get it working.

My code to localize the url:

$replace = WPGlobus_Utils::localize_url($replace, 'en');
// This will replace the url from https://example.com/test/ to https://example.com/en/test/

Thanks in advance,

Remy

Yes, but that's not the problem. I first have to preg_replace all links in a string, and I need to localize (add en/ to the url) after the preg is going to be replaced. — Remy B
– Remy B, Commented Apr 12, 2018 at 21:05
1) Use $pattern = "/(?<=href=[\"'])[^\"']+(?=[\"'])/"; pattern 2) preg_replace_callback($pattern, function($m) { return localize_url($m[0]);}, $text); or something like that. — Wiktor Stribiżew
– Wiktor Stribiżew, Commented Apr 13, 2018 at 6:50
@WiktorStribiżew Thanks! I edited the code a bit and it worked great! :) — Remy B
– Remy B, Commented Apr 13, 2018 at 12:07

Wiktor Stribiżew · Accepted Answer · 2018-04-13 12:08:19Z

1

You need to use preg_replace_callback with the following slightly enhanced pattern:

$pattern = "/(?<=href=[\"'])[^\"']+(?=[\"'])/";

And then...

$result = preg_replace_callback($pattern, function($m) { 
   return localize_url($m[0]);
}, $text);

Note that (\"|') is meant to match either " or ' and it is much better and efficient to use a character class instead, that is ["'].

answered Apr 13, 2018 at 12:08

Wiktor Stribiżew

631k41 gold badges502 silver badges632 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

PHP Regex replace multiple urls with itself with a return function

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related