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    ReflectionClass::hasProperty

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

    ReflectionClass::hasProperty — Checks if property is defined

    Опис

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

    Checks whether the specified property is defined.

    Параметри

    name

    Name of the property being checked for.

    Значення, що повертаються

    true if it has the property, otherwise false

    Приклади

    Приклад #1 ReflectionClass::hasProperty() example

    <?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"));
    ?>

    Поданий вище приклад виведе щось схоже на:

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

    Прогляньте також

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    User Contributed Notes 3 notes

    up
    0
    dalguete at gmail dot com
    4 years 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
    -1
    dalguete at gmail dot com
    4 years 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.
    up
    -2
    rwilczek at web-appz dot de
    16 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
}
?>
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