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@ 2021-06-14T15:02:43Z

<?php

declare(strict_types=1);

function acceptBool(bool $x) {}
function acceptInt(int $x) {}
function acceptFloat(float $x) {}
function acceptString(string $x) {}
function acceptArray(array $x) {}
function acceptObject(object $x) {}

$functions = [
    "bool" => "acceptBool",
    "int" => "acceptInt",
    "float" => "acceptFloat",
    "string" => "acceptString",
    "array" => "acceptArray",
    "object" => "acceptObject",
];

$vars = [
    "null" => null,
    "bool" => true,
    "int" => 1,
    "float" => 3.14,
    "numeric string" => "2.72",
    "non-numeric string" => "elephphant",
    "array" => [1, 2, 3],
    "object" => new stdClass(),
];

foreach ($vars as $passedType => $var) {
    foreach ($functions as $acceptedType => $function) {
        if ($passedType === $acceptedType) {
            continue;
        }
        
        echo str_pad($passedType, 18) . " -> " . str_pad($acceptedType, 10) . ": ";
        try {
            $function($var);
            echo "success";
        } catch(TypeError $e) {
            echo "failure";
        }
        echo "\n";
    }
}

Output for git.master, git.master_jit, rfc.property-hooks: null -> bool : failure null -> int : failure null -> float : failure null -> string : failure null -> array : failure null -> object : failure bool -> int : failure bool -> float : failure bool -> string : failure bool -> array : failure bool -> object : failure int -> bool : failure int -> float : success int -> string : failure int -> array : failure int -> object : failure float -> bool : failure float -> int : failure float -> string : failure float -> array : failure float -> object : failure numeric string -> bool : failure numeric string -> int : failure numeric string -> float : failure numeric string -> string : success numeric string -> array : failure numeric string -> object : failure non-numeric string -> bool : failure non-numeric string -> int : failure non-numeric string -> float : failure non-numeric string -> string : success non-numeric string -> array : failure non-numeric string -> object : failure array -> bool : failure array -> int : failure array -> float : failure array -> string : failure array -> object : failure object -> bool : failure object -> int : failure object -> float : failure object -> string : failure object -> array : failure

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Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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