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run code in 300+ PHP versions simultaneously
<?php function & do_something(& $arg) { $arg = 'func value'; return $arg; } $a = 'initial value'; $b = do_something($a); $b = 'new value'; var_dump($a, $b); $x = 'initial value'; $y = & do_something($x); $y = 'new value'; var_dump($x, $y);
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, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(10) "func value" string(9) "new value" string(9) "new value" string(9) "new value"
preferences:
268.89 ms | 406 KiB | 400 Q