3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $_POST['checkbox_1'] = ''; $_POST['checkbox_11'] = 'ssa'; $_POST['checkbox_12'] = 'ssa'; $_POST['checkbox_30'] = ''; //$_POST['checkbox_13']; foreach($_POST as $key=>$val){ if(substr($key, 0, 9 ) != 'checkbox_') continue; if($val){ echo (int)substr($key, 9 )." "; } }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
11 12