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<?php function increment(&$var) { echo 'Variable with value '.$var.' has been passed.'.PHP_EOL; $var++; } $a = 1; call_user_func('increment', $a); echo $a."\n";
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Warning: increment(): Argument #1 ($var) must be passed by reference, value given in /in/oseSF on line 10 Variable with value 1 has been passed. 1
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Parameter 1 to increment() expected to be a reference, value given in /in/oseSF on line 10 Variable with value 1 has been passed. 1
Output for 7.0.0 - 7.0.20
Warning: Parameter 1 to increment() expected to be a reference, value given in /in/oseSF on line 10 1
preferences:
172.91 ms | 401 KiB | 204 Q