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<?php class Foo {} class Bar {} $foo = new Foo(); $bar = new Bar(); var_dump($foo < $bar, $bar < $foo); $array = [$foo, $bar]; var_dump(sort($array), $array); var_dump(sort($array), $array);
Output for 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
bool(false) bool(false) bool(true) array(2) { [0]=> object(Bar)#2 (0) { } [1]=> object(Foo)#1 (0) { } } bool(true) array(2) { [0]=> object(Foo)#1 (0) { } [1]=> object(Bar)#2 (0) { } }
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 bool(false) bool(false) bool(true) array(2) { [0]=> object(Bar)#2 (0) { } [1]=> object(Foo)#1 (0) { } } bool(true) array(2) { [0]=> object(Foo)#1 (0) { } [1]=> object(Bar)#2 (0) { } }

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