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run code in 300+ PHP versions simultaneously
<?php class C{} class D extends C{} interface iA{ public function iAm(C $obj); } class A implements iA{ public function iAm(C $obj) { $b =2; } public function AiAm(C $obj){ $a = 1; } } class B implements iA{ public function BiAm(D $obj) { $a = 1; } }
Output for 7.0.0 - 7.0.33, 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: Class B contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (iA::iAm) in /in/MALQl on line 19
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: Class B contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (iA::iAm) in /in/MALQl on line 19
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Fatal error: Class B contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (iA::iAm) in /in/MALQl on line 23
Process exited with code 255.

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