3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arrs = array(); $arrs[] = array('something1', something2); $arrs[] = array('something3', something4); $arrs[] = array(); $arrs[] = array('something1', something2); $list = array(); foreach($arrs as $arr) { if(is_array($arr)) { $list = array_merge($list, $arr); } } print_r($list);
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
Fatal error: Uncaught Error: Undefined constant "something2" in /in/OCdWL:4 Stack trace: #0 {main} thrown in /in/OCdWL on line 4
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant something2 - assumed 'something2' (this will throw an Error in a future version of PHP) in /in/OCdWL on line 4 Warning: Use of undefined constant something4 - assumed 'something4' (this will throw an Error in a future version of PHP) in /in/OCdWL on line 5 Warning: Use of undefined constant something2 - assumed 'something2' (this will throw an Error in a future version of PHP) in /in/OCdWL on line 7 Array ( [0] => something1 [1] => something2 [2] => something3 [3] => something4 [4] => something1 [5] => something2 )
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25
Notice: Use of undefined constant something2 - assumed 'something2' in /in/OCdWL on line 4 Notice: Use of undefined constant something4 - assumed 'something4' in /in/OCdWL on line 5 Notice: Use of undefined constant something2 - assumed 'something2' in /in/OCdWL on line 7 Array ( [0] => something1 [1] => something2 [2] => something3 [3] => something4 [4] => something1 [5] => something2 )
preferences:
225.23 ms | 405 KiB | 330 Q