Online PHP editor | output for pnXfM

@ 2023-10-11T10:34:37Z

<?php

class Database {}

$fns = [
    function ($str) {},
    function ($str ="hello") {},
    function (string $str) {},
    function (string $str = null) {},
    function (?string $str) {},
    function (?Database $db) {},
    function (Database $db = new Database()) {},
    function (string|null $str) {},
    function (string $str = "hello") {},
    function (?string $str = "hello") {},
    function (string|int $str) {},
    function (string|null $str = null) {},
    function (string|null $str = "hello") {},
];

echo "parameter\tallowsNull\tisOptional\tgetDefaultValue\tgetType\n";

foreach ($fns as $fn) {
    $param = (new ReflectionFunction($fn))->getParameters()[0];
    
    echo substr($param->__toString(), 26, -2)
        . "\t" . json_encode($param->allowsNull())
        . "\t" . json_encode($param->isOptional())
        . "\t" . ($param->isDefaultValueAvailable() ? str_replace("\n", "", print_r($param->getDefaultValue(), true)) : "throws ReflectionException")
        . "\t" . ($param->getType() ? get_class($param->getType()) : "null")
        . "\n";
}

Output for 8.2.10 - 8.2.11, 8.3.0: parameter allowsNull isOptional getDefaultValue getType $str true false throws ReflectionException null $str = 'hello' true true hello null string $str false false throws ReflectionException ReflectionNamedType ?string $str = NULL true true ReflectionNamedType ?string $str true false throws ReflectionException ReflectionNamedType ?Database $db true false throws ReflectionException ReflectionNamedType Database $db = new \Database() false true Database Object() ReflectionNamedType ?string $str true false throws ReflectionException ReflectionNamedType string $str = 'hello' false true hello ReflectionNamedType ?string $str = 'hello' true true hello ReflectionNamedType string|int $str false false throws ReflectionException ReflectionUnionType ?string $str = NULL true true ReflectionNamedType ?string $str = 'hello' true true hello ReflectionNamedType
Output for 8.0.11: Fatal error: Constant expression contains invalid operations in /in/pnXfM on line 12
Process exited with code 255.
Output for 7.4.33: Parse error: syntax error, unexpected '|', expecting variable (T_VARIABLE) in /in/pnXfM on line 13
Process exited with code 255.
Output for 5.6.40: Parse error: syntax error, unexpected '?', expecting variable (T_VARIABLE) in /in/pnXfM on line 10
Process exited with code 255.

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