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<?php class Magic { protected $v = array("a" => 1, "b" => 2, "c" => 3); public function &__get($v) { var_dump($v); var_dump($this->v[$v]); return $this->v[$v]; } } $m = new Magic(); $m->d[] = 4; var_dump($m->d); echo $m->d[0];
Output for 7.1.6
string(1) "d" Notice: Undefined index: d in /in/1Fdqi on line 7 NULL string(1) "d" array(1) { [0]=> int(4) } array(1) { [0]=> int(4) } string(1) "d" array(1) { [0]=> int(4) } 4