Homemade a small website, one of the features always have questions, ask you to answer

Homemade a small website, one of the features always have a problem, ask you to answer?
One.php: (entry to start running)

 
  /**
* index.php mylocalshop Entrance

* @copyright (C) 2013-2014 Mylocalshop
* @licensehttp://www.baidu.com/
* @lastmodify2013-01-07
*/


/**
* Site root directory path
* @var String
*/
Define (' Localshop_path ', DirName (__file__). Directory_separator);
Echo Localshop_path;

Require_once Localshop_path. ' /base.php ';
$mls = new MLS ();
$mls->load (' front/includes/', ' DINDEX.PHDP ');  This is wrong, but why is it also shown correctly here?
        $mls->load (' front/includes/', ' index.php ');   This is the real file name.
?>

Dir_list.php: (Displays the directory tree structure used to determine whether the directory or file is in base.php)

 
!--? php
/** 
 * Displays the entire site's directory tree structure 
 * @author Administrator 
 * 
 */
 function Dir_list () {
 return Array (
 ' admin ' = = = Array (
 ' CSS ', 
 ' images ', 
 ' includes ' = = Array (
 ') Libs ' 
), 
 ' JS ' 
), 
 ' common ' = = Array (
 ' config ' = = Array (
 ' admin ' = = = Array (
 ' config.php ') 
), 
 ' front ' = = Array (
 ' config.php ' 
), 
 ' config.php ', 
 ' dir_list.php ' 
), 
 ' includes ' = Array (
 ' libs ' 
), 
 ' JS ', 
 ' languages ' = = Array (
 ' en_us ' = = Array (
 ' admin ' = = = Array (
 ') Common.php ' 
), 
 ' front ' = = Array (
 ' common.php ' 
) 
), 
 ' zh_cn ' = = Array (
 ' admin ' = = Array ( 
 ' common.php ' 
), 
 ' front ' = = Array (
 ' common.php ' 
) 
) 
), 
 ' templates ' = = Array (
 ' templates.php ' 
) 
), 
 ' front ' = = Array (
 ' CSS ', 
 ' images ', 
 ' includes ' = = Array (
 ' libs ' 
) , 
 ' JS ' 
), 
//' base.php ', 
//' index.php ' 
); 
} 
? 
 

base.php: (Used to check if the directory and file name exist, and then turn to the referring page)

 
  /**
* Mylocalshop Frame Entrance
* @author Administrator
*
*/
Require_once Localshop_path. ' /common/config/dir_list.php ';

Class MLS {
/**
* Private Function. Determines whether the directory or file exists, returns True if none, and returns false
* @param string $target directory or file
* @return If the file type is determined to return "Befile", if the directory type is determined to return "Bedir", if neither the file nor the directory returns false.
*/
Private Function Hasdirectoryorfile ($target) {
$dirs = Mls::load_all_directory ();

foreach ($dirs as $key = = $value) {
if (In_array ($target, $value)) {
$suffix = substr ($target,-1, 4);
if ($suffix = = = '. php ')
/*if (STRRCHR ('. php ', $target) | | STRRCHR ('. html ', $target) | | strrchr ('. htm ', $target) | | strrchr ('. xhtm ', $target) | |
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