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<?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);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined array key "a" in /in/V7KoB on line 12 Warning: Undefined array key "" in /in/V7KoB on line 12 Fatal error: Uncaught TypeError: Unsupported operand types: null + array in /in/V7KoB:12 Stack trace: #0 {main} thrown in /in/V7KoB on line 12
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
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 7.3.32 - 7.3.33
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 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 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.
preferences:
211.06 ms | 402 KiB | 244 Q