예약 클래스

이 섹션에서는 예약된 표준 클래스를 나열합니다. 다양한 확장이 정의하는 다른 클래스는 각 레퍼런스에 나와 있습니다.

표준 정의 클래스

이 클래스는 PHP 빌드에 포함되어있는 표준 함수 모음에 선언된다.

Directory
dir() 로 생성.
stdClass
object로 형변환 시 생성.
__PHP_Incomplete_Class
unserialize()로 생성될 수 있음.

PHP 5 기선언 클래스

여기 추가된 기선언 클래스는 PHP 5.0.0에서 소개되었다.

exception
php_user_filter

Closure

기선언 최종 클래스 Closure는 PHP 5.3.0에서 나왔습니다. 익명 함수의 내부 구현에 사용됩니다.

자세한 정보는, 해당 클래스 페이지를 참고하십시오.

특수 클래스

다음 식별자는 특별한 목적이 있기 때문에 클래스 이름으로 사용할 수 없습니다.

self
현재 클래스.
static
실행 시점에서 현재 클래스.
parent
부모 클래스.
add a note add a note

User Contributed Notes 7 notes

up
14
wyattstorch42 at outlook dot com
8 years ago
If you call var_export() on an instance of stdClass, it attempts to export it using ::__set_state(), which, for some reason, is not implemented in stdClass.

However, casting an associative array to an object usually produces the same effect (at least, it does in my case). So I wrote an improved_var_export() function to convert instances of stdClass to (object) array () calls. If you choose to export objects of any other class, I'd advise you to implement ::__set_state().

<?php
/**
* An implementation of var_export() that is compatible with instances
* of stdClass.
* @param mixed $variable The variable you want to export
* @param bool $return If used and set to true, improved_var_export()
*     will return the variable representation instead of outputting it.
* @return mixed|null Returns the variable representation when the
*     return parameter is used and evaluates to TRUE. Otherwise, this
*     function will return NULL.
*/
function improved_var_export ($variable, $return = false) {
    if (
$variable instanceof stdClass) {
       
$result = '(object) '.improved_var_export(get_object_vars($variable), true);
    } else if (
is_array($variable)) {
       
$array = array ();
        foreach (
$variable as $key => $value) {
           
$array[] = var_export($key, true).' => '.improved_var_export($value, true);
        }
       
$result = 'array ('.implode(', ', $array).')';
    } else {
       
$result = var_export($variable, true);
    }

    if (!
$return) {
        print
$result;
        return
null;
    } else {
        return
$result;
    }
}

// Example usage:
$obj = new stdClass;
$obj->test = 'abc';
$obj->other = 6.2;
$obj->arr = array (1, 2, 3);

improved_var_export((object) array (
   
'prop1' => true,
   
'prop2' => $obj,
   
'assocArray' => array (
       
'apple' => 'good',
       
'orange' => 'great'
   
)
));

/* Output:
(object) array ('prop1' => true, 'prop2' => (object) array ('test' => 'abc', 'other' => 6.2, 'arr' => array (0 => 1, 1 => 2, 2 => 3)), 'assocArray' => array ('apple' => 'good', 'orange' => 'great'))
*/
?>

Note: This function spits out a single line of code, which is useful to save in a cache file to include/eval. It isn't formatted for readability. If you want to print a readable version for debugging purposes, then I would suggest print_r() or var_dump().
up
21
spark at limao dot com dot br
10 years ago
if you want a Dynamic class you can extend from, add atributes AND methods on the fly you can use this:
<?php
   
class Dynamic extends stdClass{
        public function
__call($key,$params){
            if(!isset(
$this->{$key})) throw new Exception("Call to undefined method ".get_class($this)."::".$key."()");
           
$subject = $this->{$key};
           
call_user_func_array($subject,$params);
        }
    }
?>

this will accept both arrays, strings and Closures:
<?php
    $dynamic
->myMethod = "thatFunction";
   
$dynamic->hisMethod = array($instance,"aMethod");
   
$dynamic->newMethod = array(SomeClass,"staticMethod");
   
$dynamic->anotherMethod = function(){
        echo
"Hey there";
    };
?>

then call them away =D
up
6
xzero at elite7hackers dot net
4 years ago
There comes improved version of amazing snippet posted by (spark at limao dot com dot br)  which allows dynamic methods generations and works as versatile extension of StdClass:

This one is faster, optimised for closures, and will work only with closures. Compatible: >= PHP 5.6
<?php

class Dynamic extends \stdClass
{
    public function
__call($key, $params)
    {
        if ( ! isset(
$this->{$key})) {
            throw new
Exception("Call to undefined method " . __CLASS__ . "::" . $key . "()");
        }

        return
$this->{$key}->__invoke(... $params);
    }
}

?>

Usage examples:

<?php
$dynamic               
= new Dynamic();
$dynamic->anotherMethod = function () {
    echo
"Hey there";
};
$dynamic->randomInt     = function ($min, $max) {
    return
mt_rand($min, $max); // random_int($min, $max); // <-- PHP7+
};

var_dump(
   
$dynamic->randomInt(1, 11),
   
$dynamic->anotherMethod()
);
?>

This will accept arrays, strings and Closures but is a bit slower due to call_user_func_array
<?php

class Dynamic extends \stdClass
{
    public function
__call($key, $params)
    {
        if ( ! isset(
$this->{$key})) {
            throw new
Exception("Call to undefined method " . __CLASS__ . "::" . $key . "()");
        }

        return
call_user_func_array($this->{$key}, $params);
    }
}

?>

Usage examples:
<?php
$dynamic               
= new Dynamic();
$dynamic->myMethod      = "thatFunction";
$dynamic->hisMethod     = array($dynamic, "randomInt");
$dynamic->newMethod     = array(SomeClass, "staticMethod");
$dynamic->anotherMethod = function () {
    echo
"Hey there";
};
$dynamic->randomInt     = function ($min, $max) {
    return
mt_rand($min, $max); // random_int($min, $max); // <-- PHP7+
};

var_dump(
   
$dynamic->randomInt(1, 11),
   
$dynamic->anotherMethod(),
   
$dynamic->hisMethod()
);

?>
up
2
unknown
19 years ago
It's handy to have a array of the reserved classes.....
var_dump (get_declared_classes ());
up
-1
Ashley Dambra
7 years ago
Here a simple class that allow to set anonymous function. It's an optimised class of stdClass.

<?php
class stdObject {
    public function
__construct(array $arguments = array()) {
        if (!empty(
$arguments)) {
            foreach (
$arguments as $property => $argument) {
                if (
$argument instanceOf Closure) {
                   
$this->{$property} = $argument;
                } else {
                   
$this->{$property} = $argument;
                }
            }
        }
    }

    public function
__call($method, $arguments) {
        if (isset(
$this->{$method}) && is_callable($this->{$method})) {
            return
call_user_func_array($this->{$method}, $arguments);
        } else {
            throw new
Exception("Fatal error: Call to undefined method stdObject::{$method}()");
        }
    }
}

$person = new stdObject(array(
   
"name" => "nick",
   
"age" => 23,
   
"friends" => array("frank", "sally", "aaron"),
   
"sayHi" => function() {
        return
"Hello there";
    }
));

$person->sayHi2 = function() {
    return
"Hello there 2";
};

$person->test = function() {
    return
"test";
};

var_dump($person->name, $person->test(), $person->sayHi2());
?>
up
-2
Typer85 at gmail dot com
14 years ago
In response to the note below mine,

This list is not incomplete. Read the Manual folks, its listed there plain and simple:

"This section lists standard predefined classes. Miscellaneous extensions define other classes which are described in their reference."

Depending on what extensions you have, they might define their own classes. This list is just the standard classes as defined by PHP with no regards to extensions.
up
-1
xzero at elite7hackers dot net
4 years ago
There comes improved version of amazing snippet posted by which allows dynamic methods generations and works as versatile extension of StdClass:

This one is faster, optimised for closures, and will work only with closures. Compatible: >= PHP 5.6
<?php

class Dynamic extends \stdClass
{
    public function
__call($key, $params)
    {
        if ( ! isset(
$this->{$key})) {
            throw new
Exception("Call to undefined method " . __CLASS__ . "::" . $key . "()");
        }

        return
$this->{$key}->__invoke(... $params);
    }
}

?>

Usage examples:

<?php
$dynamic               
= new Dynamic();
$dynamic->anotherMethod = function () {
    echo
"Hey there";
};
$dynamic->randomInt     = function ($min, $max) {
    return
mt_rand($min, $max); // random_int($min, $max); // <-- PHP7+
};

var_dump(
   
$dynamic->randomInt(1, 11),
   
$dynamic->anotherMethod()
);
?>

This will accept arrays, strings and Closures but is a bit slower due to call_user_func_array
<?php

class Dynamic extends \stdClass
{
    public function
__call($key, $params)
    {
        if ( ! isset(
$this->{$key})) {
            throw new
Exception("Call to undefined method " . __CLASS__ . "::" . $key . "()");
        }

        return
call_user_func_array($this->{$key}, $params);
    }
}

?>

Usage examples:
<?php
$dynamic               
= new Dynamic();
$dynamic->myMethod      = "thatFunction";
$dynamic->hisMethod     = array($dynamic, "randomInt");
$dynamic->newMethod     = array(SomeClass, "staticMethod");
$dynamic->anotherMethod = function () {
    echo
"Hey there";
};
$dynamic->randomInt     = function ($min, $max) {
    return
mt_rand($min, $max); // random_int($min, $max); // <-- PHP7+
};

var_dump(
   
$dynamic->randomInt(1, 11),
   
$dynamic->anotherMethod(),
   
$dynamic->hisMethod()
);

?>
To Top