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<?php $teste = new stdClass(); $teste->a = 1; $teste->b = 2; function test_func($input){ foreach( $input as $key => $value ){ $input->$key = $value++; var_dump($key, $value); } return $input; } test_func($teste); var_dump($teste);
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.25, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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(1) "a" int(2) string(1) "b" int(3) object(stdClass)#1 (2) { ["a"]=> int(1) ["b"]=> int(2) }

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173.38 ms | 404 KiB | 238 Q