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Last updated: Sat, 27 Jan 2007

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# get_declared_classes

(PHP 4, PHP 5)

get_declared_classes -- Возвращает массив с именами объявленных классов

## Описание

array get_declared_classes ( void )

Эта функция возвращает массив имен классов, объявленных в текущей итерации.

> Замечание: Начиная с PHP 4.0.1pl2, три дополнительных класса добавляются в начало списка: stdClass (объявленный в `Zend/zend.c`), OverloadedTestClass (объявленный в `ext/standard/basic_functions.c`) и Directory (объявленный в `ext/standard/dir.c`).

> Учтите также, что в зависимости от набора библиотек, собранных с PHP, может варьироваться число дополнительных классов: дополнительные расширения могут объявлять свои классы. Это означает, что вы не сможете использовать имена их классов для своих. Список классов в расширениях находится в разделе Predefined Classes дополнения.

Пример 1. Пример использования get_declared_classes()

`<?php print_r(get_declared_classes()); ?>`

Пример выведет что-нибудь близкое к:

    Array
    (
        [0] => stdClass
        [1] => __PHP_Incomplete_Class
        [2] => Directory
    )

См. также class_exists().

add a note User Contributed Notes
get_declared_classes
matt at mattsoft dot net
21-Dec-2005 02:58
`classes can't be unloaded. probably not very practical to implement that in a future version. I wouldn't go out of my way to do it if I were zend. you're better off finding a workaround. it's better programming technique to find a way around having to do that anyway.
http://www.zend.com/zend/week/week223.php#Heading10`
22-Mar-2005 09:16
`Regarding note of 3-21:
<?php
class myclass {}
$class = 'myclass';
$instance = new $class();
?>
This function could also be used to determine the names of classes defined in a particular file by calling it before and after include. It's hardly a pointless function.`
matt-php at DONT-SPAM-ME dot bitdifferent dot com
01-Nov-2004 07:41
`The array returned by this function will be in the order the classes were defined / included / required and this order does not appear to change.
For example:
<?PHP
//define classone
class classone { }
//define classtwo
class classtwo { }
//This will show X classes (built-ins, extensions etc) with
//classone and classtwo as the last two elements
print_r(get_declared_classes());
//define classthree
class classthree { }
//...and four
class classfour { }
//Shows the same result as before with class three and four appended
print_r(get_declared_classes());
?>
Output:
Array
(
[0] => stdClass
[1] .... other defined classes....
[10] => classone
[11] => classtwo
)
and...
Array
(
[0] => stdClass
[1] .... other defined classes....
[10] => classone
[11] => classtwo
[12] => classthree
[13] => classfour
)`
Jazeps Basko
07-Feb-2004 11:52
`In PHP5, you don't get declared interfaces by calling this function!!!
To get interfaces you should use get_declared_interfaces(). However, to check if an interface is already defined, you should use class_exists()! This is strange, but PHP team does not think so.`
smokey
20-Mar-2003 03:06
`you cannot remove them. they are "defined", which happens when the class is being loaded from the parser. you just deleted an instance of a class.`
Leigh Purdie
23-Jan-2003 01:01
`Note that classes remain in the declared list, even when their associated object is undef'd.
eg:
$object = new MyClass;
print_r(get_declared_classes());
undef($object);
print_r(get_declared_classes());
- the two print_r's will return the same data.
Not sure how to remove a class from the declared list.`
ben [at] efros d0t COM
06-Jul-2001 12:25
`To easily check the values, just run:
print_r (get_declared_classes());`
add a note
get_declared_interfaces get_class

Last updated: Sat, 27 Jan 2007
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