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run code in 300+ PHP versions simultaneously
<?php $re = '/\\\\o\{([^}]+)\}/m'; $str = 'hello \\o{test} how are you?'; $subst = '<span>$1</span>'; echo preg_replace($re, $subst, $str); ?>
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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
hello <span>test</span> how are you?
preferences:
153.94 ms | 407 KiB | 5 Q