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<?php $a = array( new stdClass(), new stdClass(), new stdClass(), ); var_dump($a); $i = 0; foreach ($a as $o) { $o->foo = 'bar' . $i++; } var_dump($a);
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.29 - 7.2.33, 7.3.12 - 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
array(3) { [0]=> object(stdClass)#1 (0) { } [1]=> object(stdClass)#2 (0) { } [2]=> object(stdClass)#3 (0) { } } array(3) { [0]=> object(stdClass)#1 (1) { ["foo"]=> string(4) "bar0" } [1]=> object(stdClass)#2 (1) { ["foo"]=> string(4) "bar1" } [2]=> object(stdClass)#3 (1) { ["foo"]=> string(4) "bar2" } }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
array(3) { [0]=> object(stdClass)(0) { } [1]=> object(stdClass)(0) { } [2]=> object(stdClass)(0) { } } array(3) { [0]=> object(stdClass)(0) { } [1]=> object(stdClass)(0) { } [2]=> object(stdClass)(0) { } }

preferences:
195.78 ms | 402 KiB | 353 Q