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ReflectionFunctionAbstract::hasReturnType

PHP function Edit on GitHub ✎

(PHP 7, PHP 8)

Checks if the function has a specified return type

Description

ReflectionFunctionAbstract::hasReturnType(): bool

Checks whether the reflected function has a return type specified.

Parameters Parameters

Return Values

Returns true if the function is a specified return type, otherwise false.

Examples

ReflectionFunctionAbstract::hasReturnType example

php

<?php

function to_int($param): int
{
    return (int) $param;
}

$reflection1 = new ReflectionFunction('to_int');
var_dump($reflection1->hasReturnType());

The above example will output:

output

bool(true)

Usage on built-in functions

php

<?php

$reflection2 = new ReflectionFunction('array_merge');

var_dump($reflection2->hasReturnType());