spl_autoload_call

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

    spl_autoload_call — Try all registered __autoload() functions to load the requested class

    Description

    spl_autoload_call(string $class): void

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

    Parameters

    class

    The class name being searched.

    Return Values

    No value is returned.

    Improve This Page

    Learn How To Improve This Page • Submit a Pull Request • Report a Bug
    ＋add a note

    User Contributed Notes 2 notes

    up
    -2
    Melnofil
    3 years 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
    up
    -4
    k dot varmark at gmail dot com
    13 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');

    ?>
    ＋add a note
    To Top