3v4l.org

run code in 300+ PHP versions simultaneously
<?php /** * @return non-empty-list<non-empty-string> */ function valueTypes(mixed $value): array { if (is_object($value)) { return [ $value::class, ...array_values(class_parents($value)), ...array_values(class_implements($value)), ]; } return [get_debug_type($value)]; } interface I1 {} interface I2 {} abstract class A implements I1 {} final class B extends A implements I2 {} var_dump(valueTypes(1)); var_dump(valueTypes('string')); var_dump(valueTypes(new B()));
Output for 8.0.0 - 8.0.3, 8.1.23 - 8.1.30, 8.2.10 - 8.2.24, 8.3.0 - 8.3.12
array(1) { [0]=> string(3) "int" } array(1) { [0]=> string(6) "string" } array(4) { [0]=> string(1) "B" [1]=> string(1) "A" [2]=> string(2) "I1" [3]=> string(2) "I2" }
Output for 7.4.0 - 7.4.16
Fatal error: Cannot use ::class with dynamic class name in /in/DFuO8 on line 10
Process exited with code 255.
Output for 7.3.0 - 7.3.27
Parse error: syntax error, unexpected '...' (T_ELLIPSIS), expecting ']' in /in/DFuO8 on line 11
Process exited with code 255.
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