3v4l.org

run code in 300+ PHP versions simultaneously
<?php $html = 'fsdfsdff{cta}http://fsdfdsfdsfsd.pl/sdfctasd.html?trewt=rgtrertret{cta}dupa <dfdsfsdf>'; $result = mb_ereg('{cta}*+{cta}', $html, $cta); var_dump($result, $cta);
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
bool(false) array(0) { }
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20
bool(false) NULL

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178.7 ms | 402 KiB | 224 Q