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get_class_vars() - php 类对象函数

梵高1年前 (2023-11-21)阅读数 13#技术干货
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get_class_vars()

(PHP 4, PHP 5, PHP 7)

返回由类的默认属性组成的数组

说明

get_class_vars(string $class_name): array

返回由类的默认公有属性组成的关联数组。

参数

$class_name

类名

返回值

Returns an associative array of declared properties visible from the current scope, with their default value. The resulting array elements are in the form ofvarname => value. In case of an error, it returnsFALSE.

更新日志

版本说明
5.0.3get_class_vars()will only return the properties that can be accessed from the current scope.
5.0.2Callingget_class_vars()will now expose all the properties as an array, unlike previous behaviour where protected and private properties were prefixed with nul bytes.
5.0.1Callingget_class_vars()will expose all properties, as when converting an object to a class.

范例

Example #1get_class_vars()example

以上例程会输出:

var1 :
var2 : xyz
var3 : 100

Example #2get_class_vars()and scoping behaviour

get_class_vars() - php 类对象函数

以上例程会输出:

// 5.0.0
a| * b| TestCase c
a| * b| TestCase c
// 5.0.1 - 5.0.2
a|b|c
a|b|c
// 5.0.3 +
a|b|c
a

参见

  • get_class_methods() 返回由类的方法名组成的数组
  • get_object_vars() 返回由对象属性组成的关联数组
If you want to retrieve the class vars from within the class itself, use $this.

Produces, after PHP 4.2.0, the following:
a
b
c
d
e
All 3 of get_object_vars, get_class_vars and reflection getDefaultProperties will reveal the name of the array. For serialization I recommend:

No scan the $vars and create serialization string how you wish.
This protects against erroneous prior deserializing in maintaining the integrity of the class template and ignoring unintended object properties.
I needed to get only the class static variables, leaving out instance variables.

That function returns only the public ones. The same pattern can be used inside a class, then it returns private and protected static variables, too: 
So I wanted to get a list of the public parameters in a child class using a static function pre-5.3.0 (
 string(2) "id"
 [1]=>
 string(4) "name"
 [2]=>
 string(10) "idInParent"
 [3]=>
 string(12) "nameInParent"
}
There seems to be be a function to get constants missing , i.e. get_class_constants() ... so here is a simple function for you all. Hopefully Zend will include this in the next round as a native php call, without using reflection.

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