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PHP

Get the default properties of the class


get_class_vars

(PHP 4, PHP 5)

get_class_varsGet the default properties of the class

Description

array get_class_vars ( string $class_name )

Get the default properties of the given class.

Parameters

class_name

The class name

Return Values

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.

Changelog

Version Description
5.0.3 Depending on the scope, 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.
4.2.0 Uninitialized class variables are now also reported by get_class_vars().

Examples

Example #1 get_class_vars() example

<?php

class myclass {

    var 
$var1// this has no default value...
    
var $var2 "xyz";
    var 
$var3 100;
    private 
$var4// PHP 5

    // constructor
    
function myclass() {
        
// 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";
}

?>

The above example will output:

 // Before PHP 4.2.0 var2 : xyz var3 : 100 // As of PHP 4.2.0 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'));
?>

The above example will output:

 // 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 

See Also



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