ReflectionFunctionAbstract::hasReturnType
(PHP 7)
ReflectionFunctionAbstract::hasReturnType — Checks if the function has a specified return type
Descrierea
public ReflectionFunctionAbstract::hasReturnType
(
) : bool
Checks whether the reflected function has a return type specified.
Parametri
Această funcție nu are parametri.
Valorile întoarse
Returns true if the function is a specified return type, otherwise false.
Exemple
Example #1 ReflectionFunctionAbstract::hasReturnType() example
<?php
function to_int($param) : int {
return (int) $param;
}
$reflection1 = new ReflectionFunction('to_int');
var_dump($reflection1->hasReturnType());
Exemplul de mai sus va afișa:
bool(true)
Example #2 Usage on built-in functions
<?php
$reflection2 = new ReflectionFunction('array_merge');
var_dump($reflection2->hasReturnType());
Exemplul de mai sus va afișa:
bool(false)
This is because many internal functions do not have types specified for their parameters or return values. It is therefore best to avoid using this method on built-in functions.
A se vedea și
- ReflectionFunctionAbstract::getReturnType() - Gets the specified return type of a function
add a note
User Contributed Notes
There are no user contributed notes for this page.
