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<?php class testClass{ protected $a; function __construct($a) { $this->a = $a; } public function toString() { echo $this->a; } } $b = new $testClass(10); $b->toString();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Undefined variable $testClass in /in/dtEpM on line 13 Fatal error: Uncaught Error: Class name must be a valid object or a string in /in/dtEpM:13 Stack trace: #0 {main} thrown in /in/dtEpM on line 13
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: testClass in /in/dtEpM on line 13 Fatal error: Uncaught Error: Class name must be a valid object or a string in /in/dtEpM:13 Stack trace: #0 {main} thrown in /in/dtEpM on line 13
Process exited with code 255.
Output for 7.3.32 - 7.3.33
Fatal error: Uncaught Error: Class name must be a valid object or a string in /in/dtEpM:13 Stack trace: #0 {main} thrown in /in/dtEpM on line 13
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Notice: Undefined variable: testClass in /in/dtEpM on line 13 Fatal error: Class name must be a valid object or a string in /in/dtEpM on line 13
Process exited with code 255.

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