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<?php namespace Foo { class Bar {} } namespace Other { use Foo\Bar as FooBar; class Baz { function test($instance) { var_dump($instance instanceof FooBar); } } $other = new Baz; $other->test(new Foo\Bar); }
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 Error: Class "Other\Foo\Bar" not found in /in/L3Gd4:16 Stack trace: #0 {main} thrown in /in/L3Gd4 on line 16
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 Error: Class "Other\Foo\Bar" not found in /in/L3Gd4:16 Stack trace: #0 {main} thrown in /in/L3Gd4 on line 16
Process exited with code 255.
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
Fatal error: Uncaught Error: Class 'Other\Foo\Bar' not found in /in/L3Gd4:16 Stack trace: #0 {main} thrown in /in/L3Gd4 on line 16
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Fatal error: Class 'Other\Foo\Bar' not found in /in/L3Gd4 on line 16
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_STRING in /in/L3Gd4 on line 3
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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING in /in/L3Gd4 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/L3Gd4 on line 3
Process exited with code 255.

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