3v4l.org

run code in 500+ PHP versions simultaneously
<?php $html = '<p>Paragraaf</p><h1>Kop 1</h1><h2>Kop 2</h2>'; echo $html; echo PHP_EOL; echo PHP_EOL; $html = preg_replace('#<p>.*<\/p>#','',$html); echo $html;
Output for 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.21, 8.5.0 - 8.5.6
<p>Paragraaf</p><h1>Kop 1</h1><h2>Kop 2</h2> <h1>Kop 1</h1><h2>Kop 2</h2>
preferences:
197.95 ms | 1846 KiB | 4 Q