Home/ Manual/ classobj / functions/ get_class_vars

get_class_vars

PHP function Edit on GitHub ✎

(PHP 4, PHP 5, PHP 7, PHP 8)

Get the default properties of the class

Description

get_class_vars(string $class): array

Get the default properties of the given class.

Parameters

class: 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.

Examples

get_class_vars() example

php

<?php

class MyClass
{
    public $var1; // This has no explicit default value (technically it has NULL as a default)...
    public $var2 = "xyz";
    public $var3 = 100;
    private $var4;

    public 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}: ", var_export($value, true), "\n";
}

?>

The above example will output:

output

var1: NULL
var2: 'xyz'
var3: 100

get_class_vars() and scoping behaviour

php

<?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'));

?>