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<?php #[AllowDynamicProperties] class Foo { public function __get( $name ) { return $this->$name; } public function __set( $name, $value ) { return $this->$name = $value; } public function __isset( $name ) { return isset( $this->$name ); } public function __unset( $name ) { unset( $this->$name ); } } $foo = new Foo(); var_dump(property_exists( $foo, 'enable')); $foo->enable = true; var_dump(property_exists( $foo, 'enable'));

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