ReflectionProperty::setAccessible

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

ReflectionProperty::setAccessibleプロパティのアクセス範囲を設定する

説明

public ReflectionProperty::setAccessible(bool $accessible): void

ReflectionProperty::getValue()ReflectionProperty::setValue() メソッド経由で、 protected や private なプロパティにアクセス可能にします。

注意: PHP 8.1.0 以降は、このメソッドをコールしても何も起こりません。 つまり、全てのプロパティはデフォルトでアクセス可能です。

パラメータ

accessible

true を指定すると、アクセスできるようになります。

戻り値

値を返しません。

例1 簡単なクラス定義

<?php
class MyClass
{
    private 
$foo 'bar';
}

$property = new ReflectionProperty("MyClass""foo");
$property->setAccessible(true);

$obj = new MyClass();
echo 
$property->getValue($obj);
echo 
$obj->foo;
?>

上の例の出力は、 たとえば以下のようになります。

bar
Fatal error: Uncaught Error: Cannot access private property MyClass::$foo in /in/WJqTv:12

参考

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User Contributed Notes 3 notes

up
39
matthieu at mnapoli dot fr
10 years ago
Note that the property will only become accessible using the ReflectionProperty class. The property is still private or protected in the class instances.

<?php
class MyClass {
     private
$myProperty = true;
}

$class = new ReflectionClass("MyClass");
$property = $class->getProperty("myProperty");
$property->setAccessible(true);

$obj = new MyClass();
echo
$property->getValue($obj); // Works
echo $obj->myProperty; // Doesn't work (error)
?>
up
5
Rob McVey
12 years ago
If you are using < PHP 5.3 and need to get the private attributes and values, you can use this method:

This is what you are doing:

<?php
$obj_with_privates
= new MyObject();
$class     = get_class($obj_with_privates);
$vars     = get_object_vars($obj_with_privates);
//will not show private attributes
print_r($vars);

$reflection = new ReflectionClass( $class );
$attributes = $reflection->getProperties();
//still no private access!
print_r($attributes);
?>

This is what you should do:

<?php
$obj_with_privates
= new MyObject();

$class         = get_class( $obj_with_privates );
$reflection = new ReflectionClass( $class );
$abstract    = $reflection->getMethods( ReflectionMethod::IS_ABSTRACT );
$priv_attr  = $reflection->getProperties( ReflectionProperty::IS_PRIVATE );
$privates   = array();
$parent     = get_parent_class( $class );
$child         = $class;
$constructor = $reflection->getConstructor();

//If the class has abstract methods you need to implement them
$abstr_methods = "";
if(
sizeof($abstr_methods))
{
    foreach(
$abstract as $method)
    {
       
$mname = $method->name;
       
$abstr_methods .= "public function $mname(){return false;}";
    }
}

//Convert private attributes to public attributes
if(sizeof($priv_attr))
{
   
$parseable = unserialize(str_replace("\0$class\0", "\0*\0", serialize($obj)));
    foreach(
$priv_attr as $attribute)
    {
       
$aname = $attribute->name;
       
$privates[$aname] = $parseable->$aname;
    }
}
           

$temp_child_class = "temp" . str_replace("_", "", "$class");

//You can gain access to protected attributes by extending the target class
$class_def = "
class
$temp_child_class extends $class{
   
$constructor
    public function reflect_getmyvars(){
        return get_object_vars(\$this);
    }
   
$abstr_methods
}
"
;

//place class definition in memory
eval($class_def);

//generate object from dynamic class
$tcobj =@ new $temp_child_class;   
//call the method we added to the object (to access protected vars)
$vars = $tcobj->reflect_getmyvars();

$attribs = array_merge($vars, $privates);

//will now show private attributes
print_r($attribs);
?>
up
3
Yzmir Ramirez
12 years ago
Have you tried:

<?php

echo "PHP Version: ".phpversion()."\n";

class
Foo
{
    private  
$bar  = "private";
    protected
$bar2 = "protected";
    public   
$bar3 = "public";
}

$obj = new Foo;

$arr = (array)$obj;

print_r($arr);
?>

Output:

PHP Version: 5.2.12
Array
(
    [Foobar] => private
    [*bar2] => protected
    [bar3] => public
)

PHP Version: 5.1.6
Array
(
    [Foobar] => private
    [*bar2] => protected
    [bar3] => public
)
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