ReflectionType::allowsNull
ReflectionType::allowsNull
(PHP 7)
ReflectionType::allowsNull — Checks if null is allowed
Description
public bool ReflectionType::allowsNull ( void )
Checks whether the parameter allows NULL.
Parameters
This function has no parameters.
Return Values
TRUE if NULL is allowed, otherwise FALSE
Examples
Example #1 ReflectionType::allowsNull() example
<?php
function someFunction(string $param, StdClass $param2 = null) {}
$reflectionFunc = new ReflectionFunction('someFunction');
$reflectionParams = $reflectionFunc->getParameters();
var_dump($reflectionParams[0]->getType()->allowsNull());
var_dump($reflectionParams[1]->getType()->allowsNull()); The above example will output something similar to:
bool(false) bool(true)
See Also
- ReflectionType::isBuiltin() - Checks if it is a built-in type
- ReflectionType::__toString() - To string
- ReflectionParameter::getType() - Gets a parameter's type
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https://secure.php.net/manual/en/reflectiontype.allowsnull.php
