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run code in 200+ php & hhvm versions
Bugs & Features
<?php $string = 'categoryparameterusedpricing_15'; preg_match("/categoryparameterusedpricing_0-9/", $string, $matches); echo $matches[0];
based on 7LAI1
Output for 5.3.0 - 7.2.0
Notice: Undefined offset: 0 in /in/fA7Tp on line 6
Output for 4.3.0 - 5.2.17
Notice: Undefined offset: 0 in /in/fA7Tp on line 6