PHP:如何自动加载接口和摘要

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我有这个自动加载器类最初自动加载类,但现在我想自动加载接口和摘要.

所以我在answer之后做了改变,

$reflection = new ReflectionClass($class_name);

# Return boolean if it is an interface.
if ($reflection->isInterface())
{
    $file_name = 'interface_'.strtolower(array_pop($file_pieces)).'.PHP';
}
else
{
    $file_name = 'class_'.strtolower(array_pop($file_pieces)).'.PHP';

}

我测试了它,但是这个自动加载器类根本不加载接口.我错过了什么想法?

例如,这是我的界面文件,

interface_methods.PHP

及其内容,

interface methods 
{
    public function delete();
}

下面是我的整个自动加载器类.

class autoloader
{
    /**
     * Set the property.
     */
    public $directory;
    public $recursive;

    public function __construct($directory,$recursive = array('search' => 'models') ) 
    {
        # Store the data into the property.
        $this->directory = $directory;
        $this->recursive = $recursive;

        # When using spl_autoload_register() with class methods,it might seem that it can use only public methods,though it can use private/protected methods as well,if registered from inside the class:
        spl_autoload_register(array($this,'get_class'));
    }

    private function get_class($class_name)
    {
        # List all the class directories in the array.
        if ($this->recursive)
        {
            $array_directories =  self::get_recursive_directory($this->directory);
        }
        else
        {
            if (is_array($this->directory)) $array_directories =  $this->directory;
            else $array_directories =  array($this->directory);
        }

        # Determine the class is an interface.
        $reflection = new ReflectionClass($class_name);

        $file_pieces = explode('\\',$class_name);

        # Return boolean if it is an interface.
        if ($reflection->isInterface())
        {
            $file_name = 'interface_'.strtolower(array_pop($file_pieces)).'.PHP';
        }
        else
        {
            $file_name = 'class_'.strtolower(array_pop($file_pieces)).'.PHP';

        }

        # Loop the array.
        foreach($array_directories as $path_directory)
        {
            if(file_exists($path_directory.$file_name)) 
            {
                include $path_directory.$file_name;
            } 
        }

    }

    public function get_recursive_directory($directory)
    {
        $iterator = new RecursiveIteratorIterator
                    (
                        new RecursiveDirectoryIterator($directory),RecursiveIteratorIterator::CHILD_FIRST
                    );

        # This will hold the result.
        $result = array();

        # Loop the directory contents.
        foreach ($iterator as $path) 
        {

            # If object is a directory and matches the search term ('models')...
            if ($path->isDir() && $path->getBasename() === $this->recursive['search']) 
            {

                # Add it to the result array.
                # Must replace the slash in the class - dunno why!
                $result[] = str_replace('\\','/',$path).'/';
                //$result[] = (string) $path . '/';

            }

        }

        # Return the result in an array.
        return $result;
    }
}
PHP在任何类或接口或抽象类之间没有区别.您定义的自动加载器功能总是获取自动加载的东西的名称,并且没有提示它是哪一个.

因此,您的命名策略无法自动加载,因为前缀接口为“interface_”,类为“class_”.就个人而言,我发现这样的命名约定相当烦人.

另一方面,您的自动加载器完全无法使用.它递归扫描整个目录树只是为了找到一个类!接下来的课程必须再次完成所有的工作,而不必事先做好!

如果你真的想自己做(而不是像composer那样为你做这件事),请实现PSR-0自动加载器,并坚持这种类和接口的命名方案.

请选择一个可区分的类名前缀或命名空间,并作为第一步检查自动装带器内是否要加载的类具有此前缀.如果没有,立即返回.这使您不必旋转硬盘并查看该类的文件名是否存在.

如果前缀不匹配,则不是“你的”类要加载,因此您的自动加载器无法知道如何操作,甚至不应该尝试,但已注册的其他自动加载器将知道.

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