CODEWITHSUNDEEP
phpclassobjectmethodsproperties
Joe
Joe

Reputation: 105

How do you validate if a property is accessible in php?

With classes containing private properties the property_exists() function returns true (php>5.3). With functions there is a method of is_callable that confirms not only the method exists but it is also available (as an alternative to method_exists()). Is there an equivalent counterpart to this function that will confirm if this property is accessible?

<?php

class testClass {

    private $locked;

    public $unlocked;

    private function hiddenFunction(){
        return "hidden";
    }

    public function visibleFunction(){
        return "visible";
    }

}

$object = new testClass();

var_dump(property_exists($object, "unlocked")); // returns true
var_dump(property_exists($object, "locked")); // returns true > php 5.3

var_dump(method_exists($object, "hiddenFunction")); // returns true but can't be called
var_dump(method_exists($object, "visibleFunction")); // returns true

var_dump(is_callable(array($object, "hiddenFunction"))); // returns false
var_dump(is_callable(array($object, "visibleFunction"))); // returns true

?>

Upvotes: 3

Views: 2088

Answers (1)

Halayem Anis
Halayem Anis

Reputation: 7795

You can use Reflection class taht will let you reverse-engineer classes, interfaces, functions, methods and extensions.

For example, to get all public properties of a class, you can do as follow :

$reflectionObject    = new ReflectionObject($object);
$testClassProperties = $reflectionObject->getProperties(ReflectionProperty::IS_PUBLIC);
print_r ($testClassProperties);

OUTPUT

Array
(
    [0] => ReflectionProperty Object
        (
            [name] => unlocked
            [class] => testClass
        )

)

to get all public methods of a class, you can do as follow :

$reflectionObject    = new ReflectionObject($object);
$testClassProperties = $reflectionObject->getMethods(ReflectionProperty::IS_PUBLIC);
print_r ($testClassProperties);

OUTPUT

Array
(
    [0] => ReflectionMethod Object
        (
            [name] => visibleFunction
            [class] => testClass
        )

)

Upvotes: 0

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