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<?php // usually, the order of a class definition doesn't matter $a = new A(); class A {} // when extending a class and when the parent is defined before the child, it works as well $b = new B(); class baseB {} class B extends baseB{} // but when we try to reverse the order of definition, it fails, // (though for some reason it says it's C, not baseC cannot be found) try { $c = new C(); } catch (Throwable $e){ echo $e->getMessage();} class C extends baseC {} class BaseC{} // So we could think that the order of definition is important // yet we can define D before baseD this way class D extends baseD {} $d = new D(); class baseD{}
Output for 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
Class "C" not found
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 Class "C" not found
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Class 'C' not found
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 - 5.5.38, 5.6.0 - 5.6.40
Fatal error: Class 'C' not found in /in/QFAGv on line 15
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '{' in /in/QFAGv on line 14
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 '{' in /in/QFAGv on line 14
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/QFAGv on line 14
Process exited with code 255.
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