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<?php Interface ShapeInterface { public function getArea(); } Class ShapeManager { public function __construct(ShapeInterface $shape) { $this->shape = $shape; } public function getArea() { $this->shape->getArea(); } } Class Circle { public function getArea() { return 'circle area'; } } Class Sqaure { public function getArea() { return 'square area'; } } $shape = new ShapeManager(new Circle); $shape->getArea();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Uncaught TypeError: ShapeManager::__construct(): Argument #1 ($shape) must be of type ShapeInterface, Circle given, called in /in/QYZPm on line 29 and defined in /in/QYZPm:9 Stack trace: #0 /in/QYZPm(29): ShapeManager->__construct(Object(Circle)) #1 {main} thrown in /in/QYZPm on line 9
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught TypeError: ShapeManager::__construct(): Argument #1 ($shape) must be of type ShapeInterface, Circle given, called in /in/QYZPm on line 29 and defined in /in/QYZPm:9 Stack trace: #0 /in/QYZPm(29): ShapeManager->__construct(Object(Circle)) #1 {main} thrown in /in/QYZPm on line 9
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught TypeError: Argument 1 passed to ShapeManager::__construct() must implement interface ShapeInterface, instance of Circle given, called in /in/QYZPm on line 29 and defined in /in/QYZPm:9 Stack trace: #0 /in/QYZPm(29): ShapeManager->__construct(Object(Circle)) #1 {main} thrown in /in/QYZPm on line 9
Process exited with code 255.
Output for 5.6.0 - 5.6.40
Catchable fatal error: Argument 1 passed to ShapeManager::__construct() must implement interface ShapeInterface, instance of Circle given, called in /in/QYZPm on line 29 and defined in /in/QYZPm on line 9
Process exited with code 255.

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