3v4l.org

run code in 300+ PHP versions simultaneously
<?php $literal = '23412167894125123'; for ($c = 0; $c < strlen($literal) - 2; $c++) { if(intval($literal[$c]) + 1 == intval($literal[$c + 1]) && intval($literal[$c]) + 2 == intval($literal[$c + 2])) { echo $literal[$c], $literal[$c + 1], $literal[$c + 2], '<br />'; } }
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 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 - 8.4.18, 8.5.0 - 8.5.3
234<br />678<br />789<br />123<br />
preferences:
98.21 ms | 1990 KiB | 4 Q