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<?php $result = []; function getNumsOdd(array $nums, array &$result) { foreach($nums as $num) { iterator_apply(get2Nums($num, $result),function(){yield;}); } } function get2Nums(array $nums, array &$result) { foreach($nums as $num) { if ($num % 2) { $result[$key] = $num; yield; } } } foreach(getNumsOdd([[1,3,4,5,6],[7,8,9,10]], $result) as $x); print_r($result);
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 variable $key in /in/R3ed8 on line 13 Warning: Undefined variable $key in /in/R3ed8 on line 13 Warning: Undefined variable $key in /in/R3ed8 on line 13 Warning: Undefined variable $key in /in/R3ed8 on line 13 Warning: Undefined variable $key in /in/R3ed8 on line 13 Warning: foreach() argument must be of type array|object, null given in /in/R3ed8 on line 19 Array ( [] => 9 )
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: key in /in/R3ed8 on line 13 Notice: Undefined variable: key in /in/R3ed8 on line 13 Notice: Undefined variable: key in /in/R3ed8 on line 13 Notice: Undefined variable: key in /in/R3ed8 on line 13 Notice: Undefined variable: key in /in/R3ed8 on line 13 Warning: Invalid argument supplied for foreach() in /in/R3ed8 on line 19 Array ( [] => 9 )
Output for 7.3.32 - 7.3.33
Warning: Invalid argument supplied for foreach() in /in/R3ed8 on line 19 Array ( [] => 9 )
Output for 5.4.0 - 5.4.45
Notice: Undefined variable: key in /in/R3ed8 on line 13 Notice: Use of undefined constant yield - assumed 'yield' in /in/R3ed8 on line 14 Notice: Undefined variable: key in /in/R3ed8 on line 13 Notice: Use of undefined constant yield - assumed 'yield' in /in/R3ed8 on line 14 Notice: Undefined variable: key in /in/R3ed8 on line 13 Notice: Use of undefined constant yield - assumed 'yield' in /in/R3ed8 on line 14 Catchable fatal error: Argument 1 passed to iterator_apply() must implement interface Traversable, null given, called in /in/R3ed8 on line 19 and defined in /in/R3ed8 on line 6
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/R3ed8 on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/R3ed8 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/R3ed8 on line 2
Process exited with code 255.
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295.93 ms | 401 KiB | 459 Q