PHP 8.1.0 RC 2 available for testing

ReflectionProperty::hasDefaultValue

(PHP 8)

ReflectionProperty::hasDefaultValueChecks if property has a default value declared

Description

public ReflectionProperty::hasDefaultValue(): bool

Checks whether the property was declared with a default value, including an implicit null default value. Only returns false for typed properties without default value (or dynamic properties).

Liste de param├Ętres

Cette fonction ne contient aucun param├Ętre.

Valeurs de retour

If the property has any default value (including null) true is returned; if the property is typed without a default value declared or is a dynamic property, false is returned.

Exemples

Exemple #1 ReflectionProperty::hasDefaultValue() example

<?php
class Foo {
    public 
$bar;
    public ?
int $baz;
    public ?
int $foo null;
    public 
int $boing;
    
    public function 
__construct()
    {
        
$this->ping '';
    }
}

$ro = new ReflectionObject(new Foo());
var_dump($ro->getProperty('bar')->hasDefaultValue());
var_dump($ro->getProperty('baz')->hasDefaultValue());
var_dump($ro->getProperty('foo')->hasDefaultValue());
var_dump($ro->getProperty('boing')->hasDefaultValue());
var_dump($ro->getProperty('ping')->hasDefaultValue()); // Dynamic property
var_dump($ro->getProperty('pong')->hasDefaultValue()); // Not defined property
?>

L'exemple ci-dessus va afficher :

bool(true)
bool(false)
bool(true)
bool(false)
bool(false)

Fatal error: Uncaught ReflectionException: Property Foo::$pong does not exist in example.php

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