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@ 2022-12-03T03:09:21Z

<?php

function clean_link($a)
{
    return "change";
}

function run($str)
{
    $eval_links = '$link = clean_link("$0")';

    return preg_replace_callback('{tst}i',function ($matches) use ($eval_links) {
        return $link = clean_link($matches[0]);
    },$str);
}

echo run('test');

Output
Performance
VLD
References
Branches

preg_replace_callback: documentation ( source)

preferences:dark modelive previewkey bindings

65.9 ms | 477 KiB | 5 Q