Php/docs/reflectiontype.allowsnull

• PHP Manual
• ReflectionType
• Checks if null is allowed

ReflectionType::allowsNull

(PHP 7)

ReflectionType::allowsNull — Checks if null is allowed

Description

public ReflectionType::allowsNull ( ) : bool

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

<?phpfunction 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