PHP automatic load class settings include directory whatever new is not wrong _php tutorial

get_include_path-getting the current include_path configuration options

String Get_include_path (void)

set_include_path-Setting include_path configuration options
String Set_include_path (String $new _include_path)

First Set_include_path This function, is in the script dynamically to php.ini in the include_path to modify.
And this include_path, it can be defined for the following include and require path range, or is predefined.
It's like:
If we do not set this value, we may need to write some full paths:

[PHP]
Include ("123/test1.php");
Include ("123/test2.php");
Include ("123/test3.php");
Require ("123/test4.php");
Require ("123/test5.php");
?>

Include ("123/test1.php");
Include ("123/test2.php");
Include ("123/test3.php");
Require ("123/test4.php");
Require ("123/test5.php");
?>

To introduce many external files, but if we set the Set_include_path ("123/"), we can use the following code instead.
[PHP]
!--? php
set_include_path ("123/");
include ("test1.php");
include ("test2.php");
include ("test3.php");
require ("test4.php");
require ("test5.php");
?>

!--? php
set_include_path ("123/");
include ("test1.php");
include ("test2.php");
include ("test3.php");
require ("test4.php");
require ("test5.php");
?> So this function can not only define a folder, we can define a lot of folders. As shown below, I'm going to write an initialization function:
[PHP]
Function Initialize ()

Set_include_path (Get_include_path (). Path_separator. "Core/");
Set_include_path (Get_include_path (). Path_separator. "app/");
Set_include_path (Get_include_path (). Path_separator. "admin/");
Set_include_path (Get_include_path (). Path_separator. "lib/");
Set_include_path (Get_include_path (). Path_separator. "include/");
Set_include_path (Get_include_path (). Path_separator. " data/");
Set_include_path (Get_include_path (). Path_separator. " cache/");

Function Initialize ()
{
Set_include_path (Get_include_path (). Path_separator. "Core/");
Set_include_path (Get_include_path (). Path_separator. "app/");
Set_include_path (Get_include_path (). Path_separator. "admin/");
Set_include_path (Get_include_path (). Path_separator. "lib/");
Set_include_path (Get_include_path (). Path_separator. "include/");
Set_include_path (Get_include_path (). Path_separator. " data/");
Set_include_path (Get_include_path (). Path_separator. " cache/");
So its path is:

.; c:\php5\pear;core/;app/;admin/;lib/;include/;d ata/;cache/

Here's an example.

[PHP]
$include _path=get_include_path (); Original Base Directory
$include _path.=path_separator. " include/";
$include _path.=path_separator. " classs/";
$include _path.=path_separator. " Libs/";
echo $include _path;
Set up all directories where the include contains files
Set_include_path ($include _path);

function __autoload ($className)
{
echo ' class '. $className;
Include Strtolower ($className). ". Class.php ";
}
$Smarty = new Smarty;
?>

$include _path=get_include_path (); Original Base Directory
$include _path.=path_separator. " include/";
$include _path.=path_separator. " classs/";
$include _path.=path_separator. " Libs/";
echo $include _path;
Set up all directories where the include contains files
Set_include_path ($include _path);

function __autoload ($className)
{
echo ' class '. $className;
Include Strtolower ($className). ". Class.php ";
}
$Smarty = new Smarty;
?>

When multiple directories are specified as Include_path, and the required files are present in files with the same name in each of these directories, PHP chooses to use the files in the pre-ranked directory when the Include_path is set.

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