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@ 2019-01-23T13:22:08Z

<?php

$text = "This is a text with some@email.com an e-mail address in it";

echo preg_replace_callback(
        '~[\w.-]+@(?:[\w-]+\.)+\w+~',
        function($m) {
            return "**{$m[0]}**";
        },
        $text
     );

Output
Performance
VLD
References
Branches

preg_replace_callback: documentation ( source)

preferences:dark modelive previewkey bindings

27.56 ms | 404 KiB | 5 Q