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get_class_vars

Contents

(PHP 4, PHP 5, PHP 7)

get_class_vars — Get the default properties of the class

Description

get_class_vars ( string $class_name ) : array

Get the default properties of the given class.

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Parameters

class_name

The class name

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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.

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Changelog

Version Description
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.

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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;

    // 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";
}

?>

The above example will output:

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

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See Also

Find a PHP function

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Document created the 30/01/2003, last modified the 26/10/2018
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References

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