3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php preg_match("(_[A-Za-z]{1})+", "resource_id_heeelp_lala_klopsiki", $matches); print_r($matches);
Output for 5.2.0 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match(): Unknown modifier '+' in /in/7vuWq on line 2
Output for hhvm-3.10.0 - 3.12.0
Warning: Unknown modifier '+': [(_[A-Za-z]{1})+] in /in/7vuWq on line 2
Output for 4.3.11 - 5.1.6
Warning: preg_match(): Unknown modifier '+' in /in/7vuWq on line 2 Array ( )
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier '+' in /in/7vuWq on line 2 Array ( )