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run code in 300+ PHP versions simultaneously
<?php interface ChildVisitor { /* some visiting methods */ } interface ParentVisitor extends ChildVisitor { /* some extra visiting methods */ } interface ParentType { public function accept(ParentVisitor $visitor) : mixed; } interface ChildType extends ParentType { public function accept(ChildVisitor $visitor) : mixed; } interface OtherInterface extends ParentType {} interface InterfaceOrClass extends OtherInterface,ChildType {}
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.25, 8.4.1 - 8.4.12
Fatal error: Declaration of ParentType::accept(ParentVisitor $visitor): mixed must be compatible with ChildType::accept(ChildVisitor $visitor): mixed in /in/pLcNM on line 9
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: Declaration of ParentType::accept(ParentVisitor $visitor): mixed must be compatible with ChildType::accept(ChildVisitor $visitor): mixed in /in/pLcNM on line 9
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Warning: Declaration of ParentType::accept(ParentVisitor $visitor): mixed should be compatible with ChildType::accept(ChildVisitor $visitor): mixed in /in/pLcNM on line 9
Output for 7.3.0 - 7.3.33
Fatal error: Declaration of ChildType::accept(ChildVisitor $visitor): mixed must be compatible with ParentType::accept(ParentVisitor $visitor): mixed in /in/pLcNM on line 12
Process exited with code 255.
preferences:
136.2 ms | 410 KiB | 5 Q