Question

我将下面的代码作为自动加载类，但似乎clean方法无法正常工作，并且它总是会回到dirty方法。

我是否正确使用spl_autoload？如果是这样，那么正确（更好）的方式是什么？这种效率低下，怎么可以改进？

我在使用此方法时总是得到诸如底部的输出，并且在某些情况下它只是找不到类但不会抛出任何错误我将显示错误设置为1并检查了错误日志，但完全没有。

代码初始化为

require "vendor/AutoLoader.class.php";
self::setGlobal("autoloader", AutoLoader::init());

课程如下：

public static $instance;
private $_src=array('vendor/', 'lib/', '');
private $_sub=array('base/', '');
private $_ext=array('.php', 'class.php', 'lib.php');

/* initialize the autoloader class */
public static function init(){
    if(self::$instance==NULL){
        self::$instance=new self();
    }
    return self::$instance;
}

/* put the custom functions in the autoload register when the class is initialized */
private function __construct(){
    spl_autoload_register(array($this, 'clean'));
    spl_autoload_register(array($this, 'dirty'));
}

/* the clean method to autoload the class without any includes, works in most cases */
private function clean($class){
    $class=str_replace('_', '/', $class);
    spl_autoload_extensions(implode(',', $this->_ext));
    foreach($this->_src as $resource){
      foreach($this->_sub as $sub){
        echo 'Trying to load ', $class, ' via ', __METHOD__, "()<br />";
        set_include_path(pegFramework::getGlobal("baseDir") . $resource.$sub);
        spl_autoload($class);
        if(class_exists($class)) {
          echo 'Found and clean included '.$class.' in '.$resource.$sub."<br />";
          break 2;
        }
      }
    }
}

/* the dirty method to autoload the class after including the php file containing the class */
private function dirty($class){
    global $docroot;
    $class=str_replace('_', '/', $class);
    foreach($this->_src as $resource){
        foreach($this->_ext as $ext){
          foreach($this->_sub as $sub){
            echo 'Trying to load ', $class, ' via ', __METHOD__, "()<br />";
            if(@include(pegFramework::getGlobal("baseDir") . $resource . $sub. $class . $ext)) {
              echo 'Found and dirty included '.$class.' as '.$resource . $sub. $class . $ext."<br />";
              break 3;
            }
          }
        }
    }
    spl_autoload($class);
}

Trying to load pegDatabase via pegAutoloader::clean()
...snip...
Trying to load pegDatabase via pegAutoloader::clean()
Trying to load pegDatabase via pegAutoloader::dirty()
Trying to load pegDatabase via pegAutoloader::dirty()
Trying to load basepegDatabase via pegAutoloader::clean()
...snip...
Trying to load basepegDatabase via pegAutoloader::clean()
Trying to load basepegDatabase via pegAutoloader::dirty()
Found and dirty included basepegDatabase as vendor/base/basepegDatabase.php
Found and dirty included pegDatabase as vendor/pegDatabase.php
Trying to load pegRequest via pegAutoloader::clean()
...snip...
Trying to load pegRequest via pegAutoloader::clean()
Trying to load pegRequest via pegAutoloader::dirty()
Trying to load pegRequest via pegAutoloader::dirty()
Found and dirty included pegRequest as vendor/pegRequest.php
Trying to load pegFacebook via pegAutoloader::clean()
...snip...
Trying to load pegFacebook via pegAutoloader::clean()
Trying to load pegFacebook via pegAutoloader::dirty()
...snip...
Trying to load pegFacebook via pegAutoloader::dirty()
Trying to load Facebook via pegAutoloader::clean()
Trying to load Facebook via pegAutoloader::clean()
...snip...
Trying to load Facebook via pegAutoloader::dirty()
Trying to load Facebook via pegAutoloader::dirty()
Trying to load Facebook via pegAutoloader::dirty()
...snip...
Trying to load Facebook via pegAutoloader::dirty()
Trying to load Facebook via pegAutoloader::dirty()
...snip...
Trying to load Facebook via pegAutoloader::dirty()

Answer 1

我认为这是对spl_autoload的呼唤绊倒了你。在php documentation的评论中，我找到了this：

注意这个函数会LOWERCASE它寻找的类名，当它找不到Foo_Bar.php时不要混淆

因此，使用spl_autoload或pegFacebook拨打Facebook只会触发搜索名为pegfacebook.php或facebook.class.php的文件。

如果我是你，我会查看Symfony的UniversalClassLoader，了解更简化的类加载处理的例子。您可以调整它以使用特定扩展，但我至少会考虑找到一种新方法来处理这个问题。

PHP5 AutoLoader SPL_AutoLoad失败

1 个答案: