ReflectionFunctionAbstract::hasReturnType

(PHP 7, PHP 8)

ReflectionFunctionAbstract::hasReturnType — Checks if the function has a specified return type

Description

public function ReflectionFunctionAbstract::hasReturnType(): bool

Checks whether the reflected function has a return type specified.

Parameters

This function has no parameters.

Return Values

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

Examples

Example #1 ReflectionFunctionAbstract::hasReturnType() example

<?php

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

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

The above example will output:

bool(true)

Example #2 Usage on built-in functions

<?php

$reflection2 = new ReflectionFunction('array_merge');

var_dump($reflection2->hasReturnType());