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<?php class MyParent { private $var = 0; } class Child extends MyParent { public function __construct() { $this->var = 1; } } class Abuser extends MyParent { public function get(MyParent $child) { return $child->var; } } $chils = new Child(); $abuser = new Abuser(); var_dump($abuser->get($child));
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Creation of dynamic property Child::$var is deprecated in /in/4imK6 on line 12 Warning: Undefined variable $child in /in/4imK6 on line 27 Fatal error: Uncaught TypeError: Abuser::get(): Argument #1 ($child) must be of type MyParent, null given, called in /in/4imK6 on line 27 and defined in /in/4imK6:18 Stack trace: #0 /in/4imK6(27): Abuser->get(NULL) #1 {main} thrown in /in/4imK6 on line 18
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Warning: Undefined variable $child in /in/4imK6 on line 27 Fatal error: Uncaught TypeError: Abuser::get(): Argument #1 ($child) must be of type MyParent, null given, called in /in/4imK6 on line 27 and defined in /in/4imK6:18 Stack trace: #0 /in/4imK6(27): Abuser->get(NULL) #1 {main} thrown in /in/4imK6 on line 18
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: child in /in/4imK6 on line 27 Fatal error: Uncaught TypeError: Argument 1 passed to Abuser::get() must be an instance of MyParent, null given, called in /in/4imK6 on line 27 and defined in /in/4imK6:18 Stack trace: #0 /in/4imK6(27): Abuser->get(NULL) #1 {main} thrown in /in/4imK6 on line 18
Process exited with code 255.
Output for 7.3.32 - 7.3.33
Fatal error: Uncaught TypeError: Argument 1 passed to Abuser::get() must be an instance of MyParent, null given, called in /in/4imK6 on line 27 and defined in /in/4imK6:18 Stack trace: #0 /in/4imK6(27): Abuser->get(NULL) #1 {main} thrown in /in/4imK6 on line 18
Process exited with code 255.
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Notice: Undefined variable: child in /in/4imK6 on line 27 Catchable fatal error: Argument 1 passed to Abuser::get() must be an instance of MyParent, null given, called in /in/4imK6 on line 27 and defined in /in/4imK6 on line 18
Process exited with code 255.
Output for 5.1.0 - 5.1.6
Notice: Undefined variable: child in /in/4imK6 on line 27 Fatal error: Argument 1 passed to Abuser::get() must not be null, called in /in/4imK6 on line 27 and defined in /in/4imK6 on line 18
Process exited with code 255.
Output for 5.0.4 - 5.0.5
Notice: Undefined variable: child in /in/4imK6 on line 27 Fatal error: Argument 1 must not be null in /in/4imK6 on line 18
Process exited with code 255.
Output for 5.0.0 - 5.0.3
Notice: Undefined variable: child in /in/4imK6 on line 27 Fatal error: Argument 1 must not be null in /in/4imK6 on line 18
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/4imK6 on line 5
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/4imK6 on line 5
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/4imK6 on line 5
Process exited with code 255.
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