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<?php class test { public function a(){ $this->isEmpty = 1; var_dump(property_exists($this, 'isEmpty')); unset($this->isEmpty); var_dump(property_exists($this, 'isEmpty')); } } $t = new test(); $t->a(); class test2 { public $isEmpty; public function a(){ $this->isEmpty = 1; var_dump(property_exists($this, 'isEmpty')); unset($this->isEmpty); var_dump(property_exists($this, 'isEmpty')); } } $t = new test2(); $t->a(); class test3 { public $isEmpty; public function a(){ $this->isEmpty = 1; var_dump(isset($this->isEmpty)); unset($this->isEmpty); var_dump(isset($this->isEmpty)); } } $t = new test3(); $t->a();
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Creation of dynamic property test::$isEmpty is deprecated in /in/kBBBd on line 6 bool(true) bool(false) bool(true) bool(true) bool(true) bool(false)

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