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<?php $items = [1,2,3]; function foo() { return $items; } foreach(foo() as &$item) { echo $item, PHP_EOL; $item = 5; echo $item, PHP_EOL; } var_dump($items);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Warning: Undefined variable $items in /in/iTuAt on line 5 Warning: foreach() argument must be of type array|object, null given in /in/iTuAt on line 8 array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) }
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: items in /in/iTuAt on line 5 Warning: Invalid argument supplied for foreach() in /in/iTuAt on line 8 array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) }
Output for 7.3.32 - 7.3.33
Warning: Invalid argument supplied for foreach() in /in/iTuAt on line 8 array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) }
Output for 5.4.0 - 5.4.45
Fatal error: Cannot create references to elements of a temporary array expression in /in/iTuAt on line 8
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/iTuAt 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/iTuAt on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/iTuAt on line 2
Process exited with code 255.
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264.11 ms | 401 KiB | 460 Q