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<?php class Foo { public function byRef(&$val) { $val = 'replaced'; } } $f = new Foo(); $var = ['original']; array_map($f->byRef(...), $var); print_r($var);
Output for 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
Warning: Foo::byRef(): Argument #1 ($val) must be passed by reference, value given in /in/b1KoE on line 9 Array ( [0] => original )
preferences:
54.11 ms | 741 KiB | 4 Q