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<?php class Heart{ public function Beat(){ echo 'bump bump'."\n"; } } class Animal{ protected $myVar; protected $heart; public function __construct() { $this->myVar = 'a'; $this->heart = new Heart(); } } class Cat extends Animal { function __construct(){ } public function foo() { echo $this->myVar."\n"; echo $this->heart."\n"; echo $this->heart->Beat(); } } $cat = new Cat(); $cat->foo();
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Call to a member function Beat() on null in /in/UpPKF:26 Stack trace: #0 /in/UpPKF(31): Cat->foo() #1 {main} thrown in /in/UpPKF on line 26
Process exited with code 255.
Output for 5.6.0 - 5.6.28
Fatal error: Call to a member function Beat() on null in /in/UpPKF on line 26
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.36
Fatal error: Call to a member function Beat() on a non-object in /in/UpPKF on line 26
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/UpPKF on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/UpPKF on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/UpPKF on line 4
Process exited with code 255.

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