get_class_vars() - php 类对象函数
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 |
---|---|
5.0.3 | get_class_vars()will only return the properties that can be accessed from the current scope. |
5.0.2 | Callingget_class_vars()will now expose all the properties as an array, unlike previous behaviour where protected and private properties were prefixed with nul bytes. |
5.0.1 | Callingget_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
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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