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run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = [',3', '', 'text', '1,2', '2']; foreach ($arr as $val) { var_dump(is_numeric(($a = explode(',',$val)[0])) ? $a : ''); }
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(0) "" string(0) "" string(0) "" string(1) "1" string(1) "2"
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/qNPh1 on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/qNPh1 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/qNPh1 on line 2
Process exited with code 255.