PHP 8.1.0 Alpha 1 available for testing

ReflectionClass::hasProperty

(PHP 5 >= 5.1.2, PHP 7, PHP 8)

ReflectionClass::hasPropertyComprueba si una propiedad está o no definida

Descripción

public ReflectionClass::hasProperty(string $name): bool

Comprueba si la propiedad especificada está o no definida.

Parámetros

name

Nombre de la propiedad que se desea comprobar.

Valores devueltos

true si la propiedad está definida, y en cualquier otro caso false

Ejemplos

Ejemplo #1 Ejemplo de ReflectionClass::hasProperty()

<?php
class Foo {
    public    
$p1;
    protected 
$p2;
    private   
$p3;

}

$obj = new ReflectionObject(new Foo());

var_dump($obj->hasProperty("p1"));
var_dump($obj->hasProperty("p2"));
var_dump($obj->hasProperty("p3"));
var_dump($obj->hasProperty("p4"));
?>

El resultado del ejemplo sería algo similar a:

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

Ver también

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User Contributed Notes 3 notes

up
0
dalguete at gmail dot com
30 days ago
hasProperty() now is consistent with getProperty() and getProperties() methods, thanks to this fix https://bugs.php.net/bug.php?id=49719

hasProperty() no longer returns true in private properties from parent classes.
up
0
rwilczek at web-appz dot de
11 years ago
Note, that this method does not guarantee, that you can get a property with ReflectionClass::getProperty().

ReflectionClass::hasProperty() considers the parent classes (ignoring however, that a private property is not inherited), while ReflectionClass::getProperty() and ReflectionClass::getProperties() don't care about inheritance.

(Tested with PHP 5.3.0)

<?php
class Foo
{
    private
$x;
}

class
Bar extends Foo
{
   
//
}

$foo = new ReflectionClass('Foo');
$bar = new ReflectionClass('Bar');

var_dump($foo->hasProperty('x'); // bool(true)
var_dump($bar->hasProperty('x'); // bool(true)

var_dump(get_class($foo->getProperty('x'))); //string(18) "ReflectionProperty"
try {
   
$bar->getProperty('x');
} catch (
ReflectionException $e) {
    echo
$e->getMessage(); // Property x does not exist
}
?>
up
-1
dalguete at gmail dot com
30 days ago
hasProperty() now is consistent with getProperty() and getProperties() methods, thanks to this fix https://bugs.php.net/bug.php?id=49719

hasProperty() no longer returns true in private properties.
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