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<?php $foo = 'foo'; $bar = new stdClass; $bar->$foo = array(10, 20, 30); // $bar->foo => array(10, 20, 30) $bar->{$foo[0]} = 42; // dynamic property $f = 42 – derived from zero offset of ‘foo’ var_dump($bar); $bar->$foo[0] = 42; // zeroth element of array that $foo identifies = 42 var_dump($bar);
Output for git.master, git.master_jit, rfc.property-hooks
object(stdClass)#1 (2) { ["foo"]=> array(3) { [0]=> int(10) [1]=> int(20) [2]=> int(30) } ["f"]=> int(42) } object(stdClass)#1 (2) { ["foo"]=> array(3) { [0]=> int(42) [1]=> int(20) [2]=> int(30) } ["f"]=> int(42) }

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