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<?php trait ClosureInATrait { public static function getClosureInTrait() { return function () { return __CLASS__; }; } } class ClassConstantTest { use ClosureInATrait; public static function getClosureInClass() { return function () { return __CLASS__; }; } } $closureInClass = ClassConstantTest::getClosureInClass(); $closureInTrait = ClassConstantTest::getClosureInTrait(); echo 'Before bind: ' . PHP_EOL; echo '__CLASS__ in class: ' . PHP_EOL; var_dump($closureInClass()); echo '__CLASS__ in Trait: ' . PHP_EOL; var_dump($closureInTrait()); $closureInClass = Closure::bind($closureInClass, null, 'stdClass'); $closureInTrait = Closure::bind($closureInTrait, null, 'stdClass'); echo PHP_EOL . 'After bind: ' . PHP_EOL; echo '__CLASS__ in class: ' . PHP_EOL; var_dump($closureInClass()); echo '__CLASS__ in Trait: ' . PHP_EOL; var_dump($closureInTrait());
Output for 8.5.0 - 8.5.1
Before bind: __CLASS__ in class: string(17) "ClassConstantTest" __CLASS__ in Trait: string(17) "ClassConstantTest" Warning: Cannot bind closure to scope of internal class stdClass, this will be an error in PHP 9 in /in/WIK1E on line 34 Warning: Cannot bind closure to scope of internal class stdClass, this will be an error in PHP 9 in /in/WIK1E on line 35 After bind: __CLASS__ in class: Fatal error: Uncaught Error: Value of type null is not callable in /in/WIK1E:39 Stack trace: #0 {main} thrown in /in/WIK1E on line 39
Process exited with code 255.
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14
Before bind: __CLASS__ in class: string(17) "ClassConstantTest" __CLASS__ in Trait: string(17) "ClassConstantTest" Warning: Cannot bind closure to scope of internal class stdClass in /in/WIK1E on line 34 Warning: Cannot bind closure to scope of internal class stdClass in /in/WIK1E on line 35 After bind: __CLASS__ in class: Fatal error: Uncaught Error: Value of type null is not callable in /in/WIK1E:39 Stack trace: #0 {main} thrown in /in/WIK1E on line 39
Process exited with code 255.
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
Before bind: __CLASS__ in class: string(17) "ClassConstantTest" __CLASS__ in Trait: string(17) "ClassConstantTest" Warning: Cannot bind closure to scope of internal class stdClass in /in/WIK1E on line 34 Warning: Cannot bind closure to scope of internal class stdClass in /in/WIK1E on line 35 After bind: __CLASS__ in class: Fatal error: Uncaught Error: Function name must be a string in /in/WIK1E:39 Stack trace: #0 {main} thrown in /in/WIK1E on line 39
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Before bind: __CLASS__ in class: string(17) "ClassConstantTest" __CLASS__ in Trait: string(17) "ClassConstantTest" After bind: __CLASS__ in class: string(17) "ClassConstantTest" __CLASS__ in Trait: string(8) "stdClass"
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_STRING in /in/WIK1E 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/WIK1E on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/WIK1E on line 3
Process exited with code 255.
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