PHP:如何更改include/require函数的搜索行为?

标准include或require函数首先在include_path变量中设置的目录中查找包含的文件。然后在当前目录中搜索文件。

// Standard behaviour
inlcude "needed_file.php";

// 1. Looking for in include_path directories
// ...
// 2. Looking for in the current directories
// ...

// Necessary behaviour
inlcude "needed_file.php";

// 1. Looking for in the current directories
// ...
// 2. Looking for in include_path directories
// ...

我可以编写这样的脚本来完成此任务:

function include_file_inverted( $filename ) {
  // Looking for a file in the curret dir
  if (file_exists(dirname(__FILE__) . $filename)) {
     include (dirname(__FILE__) . $filename);
  } else {
     // Looking for a file in the include_path
     include $filename;
  }
}

但是,还有其他可能反转包含函数的搜索行为吗?

使现代化

dirname(__FILE__) __DIR__ 有必要使用 getcwd() . 因为该函数可以在其他包含的文件中描述。

// This function is described in ./admin/ directory, 
// but it is called from other places.
function include_file_inverted( $filename ) {
  // Looking for a file in the curret dir
  if (file_exists(getcwd() . $filename)) {
     include (getcwd() . $filename);
  } else {
     // Looking for a file in the include_path
     include $filename;
  }
}

更新2

我稍微改变一下我的问题。

如果当前目录中缺少所需的文件,并且该文件仅位于include_路径中,则应调用最后一个文件。

// Main working script try to include needed file
include "the_needed_file.php";

// It is located in the included_path and is called from where.
/{included_path}/the_needed_file.php

如果需要的文件在当前目录中,它会执行一些操作,然后它应该在included_path目录中包含同名的文件。

// Main working script try to include needed file
include "the_needed_file.php";

// the_needed_file is in the current directory.
// {current_dir}/the_needed_file.php
<?
  // It does something
  // ...

  // And it includes file from a system directory decribed in include_path

  // When I write this code
  include "the_needed_file.php";
  // it recursively calls the current file. It is an error.

  // So I need to write something like that
  include "/{included_path}/the_needed_file.php";
?>

有没有关于如何改进此代码的建议?