<?php class Foo { public function getAssignedVariable() { $hash = function($object) { return spl_object_hash($object); }; $self = $hash($this); foreach ($GLOBALS as $key => $value) { if ($value instanceof Foo && $self == $hash($value)) { return $key; } } } } $a = new Foo; $b = new Foo; echo '$' . $a->getAssignedVariable(), PHP_EOL; // $a echo '$' . $b->getAssignedVariable(), PHP_EOL; // $b
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