3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $obj = new stdClass(); $obj->id = ['a', 'b', 'a', 'c']; $obj->type = ['aaa', 'bbb', 'aaa', 'aaa']; $obj->num = [95, 100, 50, 11]; $sum = []; foreach($obj->id as $idx => $id) { if(!array_key_exists($id, $sum)) { $sum[$id] = []; } $sum[$obj->type[$id]] += $obj->num; } var_dump($sum);
based on raloO
Output for 7.0.0 - 7.2.0
Notice: Undefined index: a in /in/V7KoB on line 12 Notice: Undefined index: in /in/V7KoB on line 12 Fatal error: Uncaught Error: Unsupported operand types in /in/V7KoB:12 Stack trace: #0 {main} thrown in /in/V7KoB on line 12
Process exited with code 255.
Output for 5.4.0 - 5.6.28
Notice: Undefined index: a in /in/V7KoB on line 12 Notice: Undefined index: in /in/V7KoB on line 12 Fatal error: Unsupported operand types in /in/V7KoB on line 12
Process exited with code 255.
Output for 5.3.19 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/V7KoB on line 4
Process exited with code 255.