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<?php class Foo { private $a; public function __construct($a) { $this->a = (int) $a; } public static function maxA(array $fooList) { return array_reduce($fooList, function(Foo $carry, Foo $item) { return ($carry == null || $item->a > $carry->a) ? $item : $carry; }); } } $fooList = [ new Foo(1), new Foo(5), new Foo(2), ]; var_dump(Foo::maxA($fooList));
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: Foo::{closure}(): Argument #1 ($carry) must be of type Foo, null given in /in/ZflBM:14 Stack trace: #0 [internal function]: Foo::{closure}(NULL, Object(Foo)) #1 /in/ZflBM(14): array_reduce(Array, Object(Closure)) #2 /in/ZflBM(26): Foo::maxA(Array) #3 {main} thrown in /in/ZflBM on line 14
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Fatal error: Uncaught TypeError: Foo::{closure}(): Argument #1 ($carry) must be of type Foo, null given in /in/ZflBM:14 Stack trace: #0 [internal function]: Foo::{closure}(NULL, Object(Foo)) #1 /in/ZflBM(16): array_reduce(Array, Object(Closure)) #2 /in/ZflBM(26): Foo::maxA(Array) #3 {main} thrown in /in/ZflBM on line 14
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
Fatal error: Uncaught TypeError: Argument 1 passed to Foo::{closure}() must be an instance of Foo, null given in /in/ZflBM:14 Stack trace: #0 [internal function]: Foo::{closure}(NULL, Object(Foo)) #1 /in/ZflBM(16): array_reduce(Array, Object(Closure)) #2 /in/ZflBM(26): Foo::maxA(Array) #3 {main} thrown in /in/ZflBM on line 14
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
Catchable fatal error: Argument 1 passed to Foo::{closure}() must be an instance of Foo, null given in /in/ZflBM on line 14
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/ZflBM on line 20
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/ZflBM on line 14
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/ZflBM on line 12
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/ZflBM on line 5
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
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/ZflBM on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/ZflBM on line 5
Process exited with code 255.
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