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ReflectionProperty::setAccessible

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

ReflectionProperty::setAccessibleSet property accessibility

说明

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

Enables access to a protected or private property via the ReflectionProperty::getValue() and ReflectionProperty::setValue() methods.

注意: As of PHP 8.1.0, calling this method has no effect; all properties are accessible by default.

参数

accessible

true to allow accessibility, or false.

返回值

没有返回值。

示例

示例 #1 Simple Class definition

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

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

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

以上示例的输出类似于:

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

参见

添加备注

用户贡献的备注 3 notes

up
40
matthieu at mnapoli dot fr
12 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
4
Rob McVey
14 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
14 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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