Spl_autoload使用命名空间php

Question

我正在为由nodejs外部进程运行的计划作业制作一个小框架。我想使用自动加载器，但由于某种原因，数据无法到达它。我还使用了名称空间。下面是我的文件夹结构:

Library
  |_ Core
     |_ JobConfig.php
  |_ Utilities
     |_ Loader.php
  |_ Scheduled
     |_ SomeJob.php
  |_ Config.php

我的Config.php只有一些定义和我的Loader.php的一个实例。

Loader.php如下:

public function __constructor()
{
    spl_autoload_register(array($this, 'coreLoader'));
    spl_autoload_register(array($this, 'utilitiesLoader'));
}
private function coreLoader($class)
{
    echo $class;
    return true;
}
private function utilitiesLoader($lass)
{
    echo $class;
    return true;
}

因此，对于我的SomeJob.php，我包括Config.php，然后在失败时尝试实例化JobConfig.php。我的名称空间看起来像LibraryCoreJobConfig等等。我不确定如果没有引导能力，这是否是最好的方法。但是在加载器失败之前，我没有看到它的回显。

编辑:

我尝试了@Layne的建议，但没有用。我仍然得到一个没有找到的类，似乎类没有进入spl堆栈。下面是代码

Answer 1

如果您实际以与使用目录结构相同的方式使用名称空间，那么这应该相当容易。

<?php
namespace Library {
    spl_autoload_register('LibraryAutoloader::default_autoloader');
    class Autoloader {
        public static function default_autoloader($class) {
            $class = ltrim($class, '\');
            $file = __DIR__ . '/../';
            if ($lastNsPos = strrpos($class, '\')) {
                $namespace = substr($class, 0, $lastNsPos);
                $class     = substr($class, $lastNsPos + 1);
                $file .= str_replace('\', '/', $namespace) . '/';
            }
            $file .= $class . '.php';
            include $file;
        }
    }
}

将其放入Library目录中，并在更高级别上要求它。希望我没有把它搞砸，没有测试它

编辑:固定路径

Answer 2

使用这个类来索引您的项目，只需将WP_CONTENT_DIR替换为另一个目录级别来扫描php文件，这个类自动包含文件:

    <?php
class autoloader
{
    public static function instance()
    {
        static $instance = false;
        if( $instance === false )
        {
            // Late static binding
            $instance = new static();
        }
        return $instance;
    }
    /**
     * @param $dir_level directory level is for file searching
     * @param $php_files_json_name name of the file who all the PHP files will be stored inside it
     */
    private function export_php_files($dir_level, $php_files_json_name)
    {
        $filePaths = array(mktime());
        /**Get all files and directories using iterator.*/
        $iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir_level));
        foreach ($iterator as $path) {
            if (is_string(strval($path)) and pathinfo($path, PATHINFO_EXTENSION) == 'php') {
                $filePaths[] = strval($path);
            }
        }
        /**Encode and save php files dir in a local json file */
        $fileOpen = fopen($dir_level . DIRECTORY_SEPARATOR . $php_files_json_name, 'w');
        fwrite($fileOpen, json_encode($filePaths));
        fclose($fileOpen);
    }
    /**
     * @param $php_files_json_address json file contains all the PHP files inside it
     * @param $class_file_name name of the class that was taken from @spl_autoload_register_register plus .php extension
     * @return bool Succeeding end of work
     */
    private function include_matching_files($php_files_json_address, $class_file_name)
    {
        static $files;
        $inc_is_done = false;
        if ($files == null) {
            $files = json_decode(file_get_contents($php_files_json_address), false);
        }
        /**Include matching files here.*/
        foreach ($files as $path) {
            if (stripos($path, $class_file_name) !== false) {
                require_once $path;
                $inc_is_done = true;
            }
        }
        return $inc_is_done;
    }
    /**
     * @param $dir_level directory level is for file searching
     * @param $class_name name of the class that was taken from @spl_autoload_register
     * @param bool $try_for_new_files Try again to include new files, that this feature is @true in development mode
     * it will renew including file each time after every 30 seconds @see $refresh_time.
     * @return bool Succeeding end of work
     */
    public function request_system_files($dir_level, $class_name, $try_for_new_files = false)
    {
        $php_files_json = 'phpfiles.json';
        $php_files_json_address = $dir_level . DIRECTORY_SEPARATOR . $php_files_json;
        $class_file_name = $class_name . '.php';
        $files_refresh_time = 30;
        /**Include required php files.*/
        if (is_file($php_files_json_address)) {
            $last_update = json_decode(file_get_contents($php_files_json_address), false)[0];
            if ((mktime() - intval($last_update)) < $files_refresh_time || !$try_for_new_files) {
                return $this->include_matching_files($php_files_json_address, $class_file_name);
            }
        }
        $this->export_php_files($dir_level, $php_files_json);
        return $this->include_matching_files($php_files_json_address, $class_file_name);
    }
    /**
     * Make constructor private, so nobody can call "new Class".
     */
    private function __construct()
    {
    }
    /**
     * Make clone magic method private, so nobody can clone instance.
     */
    private function __clone()
    {
    }
    /**
     * Make sleep magic method private, so nobody can serialize instance.
     */
    private function __sleep()
    {
    }
    /**
     * Make wakeup magic method private, so nobody can unserialize instance.
     */
    private function __wakeup()
    {
    }

}
/**
 * Register autoloader.
 */
try {
    spl_autoload_register(function ($className) {
        $autoloader = autoloader::instance();
        return $autoloader->request_system_files(WP_CONTENT_DIR, $className, true);
    });
} catch (Exception $e) {
    var_dump($e);
    die;
}