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<?php $o = new stdClass(); $b = 'a'; $o->a = array ( 'foo' => 1, 'bar' => 2 ); var_dump($o->{$b}['foo']); var_dump($o);
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
int(1) object(stdClass)#1 (1) { ["a"]=> array(2) { ["foo"]=> int(1) ["bar"]=> int(2) } }
Output for 4.3.0 - 4.4.9
int(1) object(stdClass)(1) { ["a"]=> array(2) { ["foo"]=> int(1) ["bar"]=> int(2) } }