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run code in 300+ PHP versions simultaneously
<?php function inc($a, $b, &$c) { ++$a; ++$b; ++$c; ++$d; } $a = 1; $b = 1; $c = 1; $params = array($a, &$b, &$c); call_user_func_array('inc', $params); var_dump($params);
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 $d in /in/3AT5B on line 4 array(3) { [0]=> int(1) [1]=> &int(1) [2]=> &int(2) }
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: d in /in/3AT5B on line 4 array(3) { [0]=> int(1) [1]=> &int(1) [2]=> &int(2) }
Output for 7.3.32 - 7.3.33
array(3) { [0]=> int(1) [1]=> &int(1) [2]=> &int(2) }
Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Notice: Undefined variable: d in /in/3AT5B on line 4 array(3) { [0]=> int(1) [1]=> &int(2) [2]=> &int(2) }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
Notice: Undefined variable: d in /in/3AT5B on line 4 array(3) { [0]=> int(1) [1]=> &int(2) [2]=> &int(2) }

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223.97 ms | 402 KiB | 310 Q