Online PHP editor | output for fJgLA

@ 2021-09-05T15:55:42Z

<?php

interface Subject
{
    // valid return types
    public function int(): int;
    public function bool(): bool;
    public function array(): array;
    public function float(): float;
    public function string(): string;
    public function iterable(): iterable;
    public function callable(): callable;
    public function void(): void;
    public function object(): object;
    public function mixed(): mixed;

    // invalid return types
    public function self(): self;
    public function integer(): integer;
    public function boolean(): boolean;
    public function double(): double;
    public function resource(): resource;
}

interface Subject2
{
    // valid return types
    PUBLIC FUNCTION INT(): INT;
    PUBLIC FUNCTION BOOL(): BOOL;
    PUBLIC FUNCTION ARRAY(): ARRAY;
    PUBLIC FUNCTION FLOAT(): FLOAT;
    PUBLIC FUNCTION STRING(): STRING;
    PUBLIC FUNCTION ITERABLE(): ITERABLE;
    PUBLIC FUNCTION CALLABLE(): CALLABLE;
    PUBLIC FUNCTION VOID(): VOID;
    PUBLIC FUNCTION OBJECT(): OBJECT;
    PUBLIC FUNCTION MIXED(): MIXED;
    PUBLIC FUNCTION SELF(): SELF;

    // invalid return types
    PUBLIC FUNCTION INTEGER(): INTEGER;
    PUBLIC FUNCTION BOOLEAN(): BOOLEAN;
    PUBLIC FUNCTION DOUBLE(): DOUBLE;
    PUBLIC FUNCTION RESOURCE(): RESOURCE;
}


test(Subject::class);
test(Subject2::class);


/**
 * @param class-string $class
 */
function test(string $class): void
{
    $result = [];

    $ref = new ReflectionClass($class);

    foreach ($ref->getMethods() as $ref_method) {
        $name = $ref_method->getName();
        $type = $ref_method->getReturnType();
        $is_valid = $type instanceof ReflectionNamedType && $type->isBuiltin();
        $key = $is_valid ? 'valid' : 'invalid';

        $type_name = $type instanceof ReflectionNamedType ? $type->getName() : null;

        if ($type_name && $name !== $type_name) {
            $name = "{$name} -> {$type_name}";
        }

        $result[$key][] = $name;
    }

    echo $class, ' ', json_encode($result, JSON_PRETTY_PRINT), PHP_EOL;
}

Output for 8.0.10 - 8.0.18, 8.1.5 - 8.1.33, 8.2.10 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.26, 8.4.1 - 8.4.14: Warning: "integer" will be interpreted as a class name. Did you mean "int"? Write "\integer" to suppress this warning in /in/fJgLA on line 19 Warning: "boolean" will be interpreted as a class name. Did you mean "bool"? Write "\boolean" to suppress this warning in /in/fJgLA on line 20 Warning: "double" will be interpreted as a class name. Did you mean "float"? Write "\double" to suppress this warning in /in/fJgLA on line 21 Warning: "resource" is not a supported builtin type and will be interpreted as a class name. Write "\resource" to suppress this warning in /in/fJgLA on line 22 Subject { "valid": [ "int", "bool", "array", "float", "string", "iterable", "callable", "void", "object", "mixed" ], "invalid": [ "self", "integer", "boolean", "double", "resource" ] } Subject2 { "valid": [ "INT -> int", "BOOL -> bool", "ARRAY -> array", "FLOAT -> float", "STRING -> string", "ITERABLE -> iterable", "CALLABLE -> callable", "VOID -> void", "OBJECT -> object", "MIXED -> mixed" ], "invalid": [ "SELF", "INTEGER", "BOOLEAN", "DOUBLE", "RESOURCE" ] }
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Warning: "integer" will be interpreted as a class name. Did you mean "int"? Write "\integer" to suppress this warning in /in/fJgLA on line 19 Warning: "boolean" will be interpreted as a class name. Did you mean "bool"? Write "\boolean" to suppress this warning in /in/fJgLA on line 20 Warning: "double" will be interpreted as a class name. Did you mean "float"? Write "\double" to suppress this warning in /in/fJgLA on line 21 Warning: "resource" is not a supported builtin type and will be interpreted as a class name. Write "\resource" to suppress this warning in /in/fJgLA on line 22 Subject { "valid": [ "int", "bool", "array", "float", "string", "iterable", "callable", "void", "object", "mixed" ], "invalid": [ "self", "integer", "boolean", "double", "resource" ] } Subject2 { "valid": [ "INT -> int", "BOOL -> bool", "ARRAY -> array", "FLOAT -> float", "STRING -> string", "ITERABLE -> iterable", "CALLABLE -> callable", "VOID -> void", "OBJECT -> object", "MIXED -> mixed" ], "invalid": [ "SELF", "INTEGER", "BOOLEAN", "DOUBLE", "RESOURCE" ] }

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