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<?php class Foo { } $r = new ReflectionClass('Foo'); var_dump($r->isInstance('string'));
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
Fatal error: Uncaught TypeError: ReflectionClass::isInstance(): Argument #1 ($object) must be of type object, string given in /in/J1jl9:9 Stack trace: #0 /in/J1jl9(9): ReflectionClass->isInstance('string') #1 {main} thrown in /in/J1jl9 on line 9
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught TypeError: ReflectionClass::isInstance(): Argument #1 ($object) must be of type object, string given in /in/J1jl9:9 Stack trace: #0 /in/J1jl9(9): ReflectionClass->isInstance('string') #1 {main} thrown in /in/J1jl9 on line 9
Process exited with code 255.
Output for 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, 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
Warning: ReflectionClass::isInstance() expects parameter 1 to be object, string given in /in/J1jl9 on line 9 NULL
Output for 5.0.0 - 5.0.4
Warning: isInstance() expects parameter 1 to be object, string given in /in/J1jl9 on line 9 NULL
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: reflectionclass in /in/J1jl9 on line 8
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: reflectionclass in /in/J1jl9 on line 8

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