PHP 8.1.0 RC 5 available for testing

spl_autoload_call

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

spl_autoload_callTry all registered __autoload() functions to load the requested class

Açıklama

spl_autoload_call(string $class): void

This function can be used to manually search for a class or interface using the registered __autoload functions.

Değiştirgeler

class

The class name being searched.

Dönen Değerler

Hiçbir değer dönmez.

add a note add a note

User Contributed Notes 2 notes

up
2
k dot varmark at gmail dot com
10 years ago
It should be noted, that calling spl_autoload_call on a child class, and then on its parent class, throws a fatal error.

This happens because autoloading the child class also loads the class it extends. And since spl_autoload_call forcibly calls the registered autoload function(s), not taking into account whether the class exists, a fatal error is thrown:

File: child.class.php

<?php
class Child extends Parent () {
    public function
__construct () {
       
parent::__construct();
    }
}
?>

File: parent.class.php

<?php
class Parent () {
    public function
__construct () {

    }
}
?>

File: autoload.php

<?php

/*    works fine    */
   
spl_autoload_call('Child');

/*    throws: Fatal error: Cannot redeclare class Parent in /parent.class.php on line 2    */
   
spl_autoload_call('Parent');

?>
up
0
Melnofil
6 months ago
A complete example with namespaces:

fruits/pinapple.php

<?php
namespace Fruits;
echo
"pinapple\n";
class
Pinapple { }
?>

fruits/pinapple.php

<?php
namespace Vegetables;
use
Fruits\Pinapple;
echo
"carrot\n";
class
Carrot { }
new
Pinapple(); // Let's call autoload here
?>

index.php

<?php
spl_autoload_register
(function($class_name) {
    @include_once(
__DIR__ . '/' . strtolower(str_replace('\\', '/', $class_name)) . '.php');
});
new
Vegetables\Carrot();
?>

Result:

carrot
pinapple

index2.php

<?php
spl_autoload_register
(function($class_name) {
    @include_once(
__DIR__ . '/' . strtolower(str_replace('\\', '/', $class_name)) . '.php');
});
spl_autoload_call('Fruits\\Pinapple'); // Reverse the load order
spl_autoload_call('Fruits\\Pinapple'); // Multiple call is safe with include_once
new Vegetables\Carrot();
?>

Result:

pinapple
carrot
To Top