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<?php interface Foo { public function blah($param); } class Bar implements Foo { public function blah($param, $optional = null) { if (2 === func_num_args()) { return '2 params'; } return '1 param'; } } $bar = new Bar(); var_dump($bar->blah('aaa')); var_dump($bar->blah('aaa', 'bbb'));
Output for 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
string(7) "1 param" string(8) "2 params"
preferences:
81.48 ms | 1627 KiB | 4 Q