preg_replace_callback with special character

Asked May 18 '20 at 19:27

Active May 18 '20 at 22:18

Viewed 54 times

I use php preg-replace-callback function to add link to part of string that is in an array :

<?php
$preg_quote_titles =  array('string 1 ? string 2 ?');

$content="string 1 ? string 2 ? string 3 ? ";

    $content = preg_replace_callback( '/(' . implode( '|', $preg_quote_titles ) . ')/i', function( $matches ) use ( $preg_quote_titles ) {

            return '<a href="#" class="post-link">' . $matches[0] . ' </a>';

    }, $content );


    echo $content;
    ?>

Code above doesn't work. Result is :

string 1 ? string 2 ? string 3 ?

With no link.

If I remove "?" character :

<?php
$preg_quote_titles =  array('string 1');

$content="string 1 ? string 2 ? string 3 ? ";

    $content = preg_replace_callback( '/(' . implode( '|', $preg_quote_titles ) . ')/i', function( $matches ) use ( $preg_quote_titles ) {

            return '<a href="#" class="post-link">' . $matches[0] . ' </a>';

    }, $content );


    echo $content;
    ?>

That works (links is added to "string 1")

How to include all character like parenthesis, question mark, etc ?

edited May 18 '20 at 22:18

asked May 18 '20 at 19:27

user2267379

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Hi! Please [edit] your question so that it's focussing on the specific part of the function you need help with. Do some debugging and break the problem down to a [mcve]. – IMSoP May 18 '20 at 19:51
@IMSoP I have edit question by keeping only important part. – user2267379 May 18 '20 at 22:15
@Justinas Yes. preg_quote is the solution. Thanks ! – user2267379 May 18 '20 at 22:21
Use `preg_quote()` on each of `$preg_quote_titles` – Justinas May 18 '20 at 22:25

preg_replace_callback with special character

0 Answers0