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run code in 300+ PHP versions simultaneously
<?php function &foo(&$param) { $param = 42; return $param; } $a = 23; echo "\$a before calling foo(): $a\n"; $b = foo($a); echo "\$a after the call to foo(): $a\n"; $b = 23; echo "\$a after touching the returned variable: $a\n"; ?>
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 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 - 7.2.34, 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
$a before calling foo(): 23 $a after the call to foo(): 42 $a after touching the returned variable: 42
preferences:
258.29 ms | 405 KiB | 415 Q