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run code in 200+ php & hhvm versions
Bugs & Features
<?php $string = "livraison 1er"; var_dump(preg_replace('/([0-9](er|éme|ème)/i','$0<sup>$1</sup',$string));
Output for 7.3.0beta1 - 7.3.0rc4
Warning: preg_replace(): Compilation failed: missing closing parenthesis at offset 20 in /in/h5pC9 on line 5 NULL
Output for 4.3.11 - 7.2.0
Warning: preg_replace(): Compilation failed: missing ) at offset 20 in /in/h5pC9 on line 5 NULL
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: missing ) at offset 20 in /in/h5pC9 on line 5 NULL