downloads | documentation | faq | getting help | mailing lists | licenses | wiki | reporting bugs | php.net sites | conferences | my php.net

search for in the

ReflectionParameter::canBePassedByValue> <ReflectionParameter
[edit] Last updated: Fri, 17 May 2013

view this page in

ReflectionParameter::allowsNull

(PHP 5)

ReflectionParameter::allowsNullChecks if null is allowed

Descrição

public bool ReflectionParameter::allowsNull ( void )

Checks whether the parameter allows NULL.

Aviso

Esta função não está documentada; somente a lista de argumentos está disponível.

Parâmetros

Esta função não possui parâmetros.

Valor Retornado

TRUE if NULL is allowed, otherwise FALSE

Veja Também



add a note add a note User Contributed Notes ReflectionParameter::allowsNull - [1 notes]
up
0
Geoffrey LAURENT
15 days ago
The allowsNull method look if arguments have a type.
If a type is defined, null is allowed only if default value is null.

 <?php
function myfunction ( $param ) {
   
}

echo (new
ReflectionFunction("myfunction"))->getParameters()[0]->allowsNull() ? "true":"false";

?>

Result : true

<?php
function myfunction ( stdClass $param ) {
   
}

echo (new
ReflectionFunction("myfunction"))->getParameters()[0]->allowsNull() ? "true":"false";

?>

Result : false

<?php
function myfunction ( stdClass $param = null ) {
   
}

echo (new
ReflectionFunction("myfunction"))->getParameters()[0]->allowsNull() ? "true":"false";
?>

Result : true

 
show source | credits | sitemap | contact | advertising | mirror sites