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run code in 200+ php & hhvm versions
Bugs & Features
<?php $c = 'Al(OH)3'; $n = preg_replace('/\.*OH\)(/d)/i', '$1', $c); echo $n;
based on jDbLF
Output for 5.6.0 - 5.6.30, 7.0.0 - 7.3.0rc3
Warning: preg_replace(): Unknown modifier 'd' in /in/P8kbb on line 5
Output for hhvm-3.15.4
Warning: Unknown modifier 'd': [/\.*OH\)(/d)/i] in /in/P8kbb on line 5