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<?php class A { private function do_something (bool $str) { echo "Class A\n"; } public function test() { $this->testPrivate(); } } class B extends A { public function do_something (string $value) { echo "Class B\n"; } public function test() { $this->testPrivate(); } } class C extends B { public function test() { $this->testPrivate(); } } $b = new B(); $b->test();
Output for 7.0.20, 7.1.0 - 7.1.25, 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 - 8.3.4, 8.3.6
Fatal error: Uncaught Error: Call to undefined method B::testPrivate() in /in/iUjUl:21 Stack trace: #0 /in/iUjUl(34): B->test() #1 {main} thrown in /in/iUjUl on line 21
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 Error: Call to undefined method B::testPrivate() in /in/iUjUl:21 Stack trace: #0 /in/iUjUl(34): B->test() #1 {main} thrown in /in/iUjUl on line 21
Process exited with code 255.
Output for 7.0.0 - 7.0.6
Warning: Declaration of B::do_something(string $value) should be compatible with A::do_something(bool $str) in /in/iUjUl on line 23 Fatal error: Uncaught Error: Call to undefined method B::testPrivate() in /in/iUjUl:21 Stack trace: #0 /in/iUjUl(34): B->test() #1 {main} thrown in /in/iUjUl on line 21
Process exited with code 255.
Output for 5.6.28
Fatal error: Call to undefined method B::testPrivate() in /in/iUjUl on line 21
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.21
Strict Standards: Declaration of B::do_something() should be compatible with A::do_something(bool $str) in /in/iUjUl on line 23 Fatal error: Call to undefined method B::testPrivate() in /in/iUjUl on line 21
Process exited with code 255.

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