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run code in 300+ PHP versions simultaneously
<?php $array = array( array('relatedOrderNumber' => 10641, 'relationtype' => 1007), array('relatedOrderNumber' => 82010, 'relationtype' => 1007), array('relatedOrderNumber' => 82020, 'relationtype' => 1007), array('relatedOrderNumber' => 82040, 'relationtype' => 1007), array('relatedOrderNumber' => 82040, 'relationtype' => 1013) ); $new = array_reduce( $array, function($carry, $item) { $type = $item['relationtype']; $orderNumber = $item['relatedOrderNumber']; if (!isset($carry[$type])) { $carry[$type] = [orderNumber]; } else { $carry[$type][] = orderNumber; } }, array() ); var_dump($new);
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Undefined constant "orderNumber" in /in/np688:18 Stack trace: #0 [internal function]: {closure}(Array, Array) #1 /in/np688(11): array_reduce(Array, Object(Closure), Array) #2 {main} thrown in /in/np688 on line 18
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Fatal error: Uncaught Error: Undefined constant "orderNumber" in /in/np688:18 Stack trace: #0 [internal function]: {closure}(Array, Array) #1 /in/np688(23): array_reduce(Array, Object(Closure), Array) #2 {main} thrown in /in/np688 on line 18
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant orderNumber - assumed 'orderNumber' (this will throw an Error in a future version of PHP) in /in/np688 on line 18 Warning: Use of undefined constant orderNumber - assumed 'orderNumber' (this will throw an Error in a future version of PHP) in /in/np688 on line 18 Warning: Use of undefined constant orderNumber - assumed 'orderNumber' (this will throw an Error in a future version of PHP) in /in/np688 on line 18 Warning: Use of undefined constant orderNumber - assumed 'orderNumber' (this will throw an Error in a future version of PHP) in /in/np688 on line 18 Warning: Use of undefined constant orderNumber - assumed 'orderNumber' (this will throw an Error in a future version of PHP) in /in/np688 on line 18 NULL
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20
Notice: Use of undefined constant orderNumber - assumed 'orderNumber' in /in/np688 on line 18 Notice: Use of undefined constant orderNumber - assumed 'orderNumber' in /in/np688 on line 18 Notice: Use of undefined constant orderNumber - assumed 'orderNumber' in /in/np688 on line 18 Notice: Use of undefined constant orderNumber - assumed 'orderNumber' in /in/np688 on line 18 Notice: Use of undefined constant orderNumber - assumed 'orderNumber' in /in/np688 on line 18 NULL
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215.73 ms | 403 KiB | 271 Q