The PATH_SEPARATOR constant and set_include_path are very useful advanced functions of php.

: This article mainly introduces the PATH_SEPARATOR constant and set_include_path, a very useful advanced function of php. For more information about PHP tutorials, see. The index. php example of zendframework contains the following sentence:

Set_include_path ('. '. PATH_SEPARATOR. '.. /library /'. PATH_SEPARATOR. '. /application/models /'. PATH_SEPARATOR. '. /application/lib /'. PATH_SEPARATOR. get_include_path ()); I don't know what PATH_SEPARATOR is. it is actually a constant.

Echo directly knows its value. in linux, it is a ":" number, WIN is a ";" number.

Set_include_path is to set the path of the php inclusion file, which is equivalent to the environment variable of the operating system.

For the set_include_path problem, in win, if you want to include multiple paths, you must use ";" to separate them, but use ":" in linux.

Therefore, the above zf code is out of stock.
Get_include_path: get the existing environment variable

Definition and usage

The pathinfo () function returns the file path information in an array.

Syntax

pathinfo(path,options)

Parameters	Description
Path	Required. Specifies the path to be checked.
Process_sections	Optional. Specifies the array element to be returned. The default value is all. Possible values: PATHINFO_DIRNAME-returns only dirname PATHINFO_BASENAME-only return basename PATHINFO_EXTENSION-returns only extension

Description

Pathinfo () returns an associated array containing path information.

Includes the following array elements:

• [Dirname]
• [Basename]
• [Extension]

Tips and comments

Note: if not all units are required, the pathinfo () function returns a string.

Example

Example 1

Output:

Array([dirname] => /testweb[basename] => test.txt[extension] => txt)

Example 2

Output:

test.txt

Under DIRECTORY_SEPARATOR window

Description

Path separator

Windows

\ Or/

Linux

/

Function _ autoload ($ classname ){

If (preg_match ('/\\\/', $ classname )){

$ Path = str_repace ('\', DIRECTORY_SEPARATOR, $ classname );

} Else {

$ Path = str_replace ('_', DIRECTORY_SEPARATOR, $ classname );

}

Require_once ("$ path. php ");

}

Reprinted from: http://www.cnblogs.com/jackluo/archive/2013/04/09/3010257.html

The above describes the advanced functions PATH_SEPARATOR and set_include_path, which are very useful for php. They include some content and hope to help those who are interested in PHP tutorials.