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<?php $A = new class($name) { private $name; function __construct(string $name) { $this->name = $name; } public function getName() : string { return $this->name; } }; $B = new $A('Matti'); $C = new $A('Pekka'); var_dump($B === $C);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined variable $name in /in/WKDf9 on line 3 Fatal error: Uncaught TypeError: class@anonymous(): Argument #1 ($name) must be of type string, null given, called in /in/WKDf9 on line 3 and defined in /in/WKDf9:6 Stack trace: #0 /in/WKDf9(3): class@anonymous->__construct(NULL) #1 {main} thrown in /in/WKDf9 on line 6
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: name in /in/WKDf9 on line 3 Fatal error: Uncaught TypeError: Argument 1 passed to class@anonymous::__construct() must be of the type string, null given, called in /in/WKDf9 on line 3 and defined in /in/WKDf9:6 Stack trace: #0 /in/WKDf9(3): class@anonymous->__construct(NULL) #1 {main} thrown in /in/WKDf9 on line 6
Process exited with code 255.
Output for 7.3.32 - 7.3.33
Fatal error: Uncaught TypeError: Argument 1 passed to class@anonymous::__construct() must be of the type string, null given, called in /in/WKDf9 on line 3 and defined in /in/WKDf9:6 Stack trace: #0 /in/WKDf9(3): class@anonymous->__construct(NULL) #1 {main} thrown in /in/WKDf9 on line 6
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Parse error: syntax error, unexpected 'class' (T_CLASS) in /in/WKDf9 on line 3
Process exited with code 255.

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