(PHP 4, PHP 5, PHP 7)
get_class_vars — 锟斤拷锟斤拷锟斤拷锟斤拷锟侥拷锟斤拷锟斤拷锟斤拷锟缴碉拷锟斤拷锟斤拷
$class_name
) : array锟斤拷锟斤拷锟斤拷锟斤拷锟侥拷瞎锟斤拷锟斤拷锟斤拷锟斤拷锟缴的癸拷锟斤拷锟斤拷锟介。
class_name锟斤拷锟斤拷
Returns an associative array of declared properties visible from the
current scope, with their default value.
The resulting array elements are in the form of
varname => value.
In case of an error, it returns FALSE.
| 锟芥本 | 说锟斤拷 |
|---|---|
| 5.0.3 | get_class_vars() will only return the properties that can be accessed from the current scope. |
| 5.0.2 | Calling get_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 | Calling get_class_vars() will expose all properties, as when converting an object to a class. |
Example #1 get_class_vars() example
<?php
class myclass {
var $var1; // this has no default value...
var $var2 = "xyz";
var $var3 = 100;
private $var4;
// constructor
function __construct() {
// change some properties
$this->var1 = "foo";
$this->var2 = "bar";
return true;
}
}
$my_class = new myclass();
$class_vars = get_class_vars(get_class($my_class));
foreach ($class_vars as $name => $value) {
echo "$name : $value\n";
}
?>
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var1 : var2 : xyz var3 : 100
Example #2 get_class_vars() and scoping behaviour
<?php
function format($array)
{
return implode('|', array_keys($array)) . "\r\n";
}
class TestCase
{
public $a = 1;
protected $b = 2;
private $c = 3;
public static function expose()
{
echo format(get_class_vars(__CLASS__));
}
}
TestCase::expose();
echo format(get_class_vars('TestCase'));
?>
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// 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