我正在开发一个插件，我在其中为自动加载类执行以下操作：

function TFSLAutoload($class) {
    $classfile = dirname(__FILE__).\'/includes/\'.strtolower($class).\'.php\';
    include $classfile;
} // function TFSLAutoload
spl_autoload_register(\'TFSLAutoload\');

在插件（类）中，我可以实例化类（例如，使用$myClassXYZ = new MyClassXYZ();) 以及使用静态功能（例如。，MyClassXYZ::my_static_func();) 不包括/不需要定义类的文件。简而言之，一切都按预期进行。

然而，当WP_DEBUG 设置为true时，我确实会收到以下警告：

Warning: include(/var/www/vhosts/MY-DOMAIN.TLD/wp-content/plugins/tf-song-list/includes/wp_atom_server.php): failed to open stream: No such file or directory in /var/www/vhosts/MY-DOMAIN.TLD/wp-content/plugins/tf-song-list/tf-song-list.php on line 31 
Warning: include(): Failed opening \'/var/www/vhosts/MY-DOMAIN.TLD/wp-content/plugins/tf-song-list/includes/wp_atom_server.php\' for inclusion (include_path=\'.:\') in /var/www/vhosts/MY-DOMAIN.TLD/wp-content/plugins/tf-song-list/tf-song-list.php on line 31 
Warning: include(/var/www/vhosts/MY-DOMAIN.TLD/wp-content/plugins/tf-song-list/includes/Recursive_ArrayAccess.php): failed to open stream: No such file or directory in /var/www/vhosts/MY-DOMAIN.TLD/wp-content/plugins/tf-song-list/tf-song-list.php on line 31 
Warning: include(): Failed opening \'/var/www/vhosts/MY-DOMAIN.TLD/wp-content/plugins/tf-song-list/includes/Recursive_ArrayAccess.php\' for inclusion (include_path=\'.:\') in /var/www/vhosts/MY-DOMAIN.TLD/wp-content/plugins/tf-song-list/tf-song-list.php on line 31
Warning: include(/var/www/vhosts/MY-DOMAIN.TLD/wp-content/plugins/tf-song-list/includes/WP_Session.php): failed to open stream: No such file or directory in /var/www/vhosts/MY-DOMAIN.TLD/wp-content/plugins/tf-song-list/tf-song-list.php on line 31 
Warning: include(): Failed opening \'/var/www/vhosts/MY-DOMAIN.TLD/wp-content/plugins/tf-song-list/includes/WP_Session.php\' for inclusion (include_path=\'.:\') in /var/www/vhosts/MY-DOMAIN.TLD/wp-content/plugins/tf-song-list/tf-song-list.php on line 31

然后，我更改了自动加载功能，首先检查文件是否存在：

function TFSLAutoload($class) {
    $classfile = dirname(__FILE__).\'/includes/\'.strtolower($class).\'.php\';
    if (file_exists($classfile)) include $classfile;
    else echo "File »$classfile« does not exist.".PHP_EOL;
} // function TFSLAutoload
spl_autoload_register(\'TFSLAutoload\');

现在，autoloader只加载我自己的插件类文件，因为它们是预定义文件夹中唯一的文件。

然而，如果上述三个WordPress类仍然通过我的Autolaorder类“发送”，那么WP是否（实际上）正确加载了它们？还是我的自动加载器与WP的内置自动加载器竞争？我如何检查？或者：我是否以错误的方式进行了整个自动加载？

为什么这三门课要送到我的自动加载器？它们是加载插件后唯一要加载的吗？

/**
 * Load a class from /php/ directory.
 *
 * There is no file_exists() check to improve performance.
 *
 * @param  string  $class         Class name
 * @param  boolean $create_object Return an object or TRUE
 * @return bool|$class
 */
function t5_es_load_class( $class, $create_object = FALSE )
{
    // create the path base just once
    static $base = FALSE;

    ! $base && $base = plugin_dir_path( __FILE__ ) . \'php\';
    ! class_exists( $class ) && require "$base/class.$class.php";

    return $create_object ? new $class : TRUE;
}

t5_es_load_class( \'T5_Metabox_Base\' );
$metabox = new T5_Metabox_Base( \'preview\' );

$data               = t5_es_load_class( \'T5_Property_List\', TRUE );
$data->plugin_url   = plugin_dir_url( __FILE__ );
$data->plugin_path  = plugin_dir_path( __FILE__ );

define("MYPLUGIN_DIR", plugin_dir_path(__FILE__));

// Notice strlen(...) calls should be written as number for speed
spl_autoload_register(function ($className) {           
    // Make sure the class included is in this plugins namespace
    if (substr($className, 0, strlen("myplugin\\\\")) === "myplugin\\\\") {
        // Remove myplugin namespace from the className
        // Replace \\ with / which works as directory separator for further namespaces
        $classNameShort = str_replace("\\\\", "/", substr($className, strlen("myplugin\\\\")));
        include_once MYPLUGIN_DIR . "classes/$classNameShort.php";
    }
});