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ReflectionFunctionAbstract::getReturnType

PHP function Edit on GitHub ✎

(PHP 7, PHP 8)

Gets the specified return type of a function

Description

ReflectionFunctionAbstract::getReturnType(): ReflectionType|null

Gets the specified return type of a reflected function.

Parameters Parameters

Return Values

Returns a ReflectionType object if a return type is specified, null otherwise.

Examples

ReflectionFunctionAbstract::getReturnType example

php

<?php

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

$reflection1 = new ReflectionFunction('to_int');
echo $reflection1->getReturnType();

The above example will output:

output

int

Usage on built-in functions

php

<?php

$reflection2 = new ReflectionFunction('array_merge');

var_dump($reflection2->getReturnType());