PHPinclude_path setting tips

When the include (), require (), and fopen_with_path () functions are used to find files. without setting include_path, when these functions open files, the web root directory is used by default. after setting include_path, these php functions will first be in the specified I 1. meaning of include_path

When the include (), require (), and fopen_with_path () functions are used to find files. without setting include_path, when these functions open files, the web root directory is used by default. after setting include_path, these php functions will first search for them under the specified include_path directory.

The principle is similar to the environment variables of the window system. when the window runs the cmd command, the system will search for the existence of these commands in the environment variables it sets after some cmd commands are entered, if yes, you can execute it.


2. configure include_path
Method 1:

Modify the include_path entry in the php. ini file.

Export de_path =.:/usr/local/lib/php:./include
Method 2:

Use the ini_set method.
Ini_set ("include_path", "..: ../:./include: ../include ");

3. Note
Zendframework include setting index. php

The code is as follows:
Set_include_path ('.'. PATH_SEPARATOR. '../library /'
. PATH_SEPARATOR. './application/models /'
. PATH_SEPARATOR. './application/lib /'
. PATH_SEPARATOR.get_include_path ());

PATH_SEPARATOR is a constant. it is a ":" number in Linux and a ";" number in Windows.

Therefore, it is best to use the constant PATH_SEPARATOR in programming; otherwise, an error will occur if the system is transplanted from linux to win or vice versa!
Get_include_path gets the existing environment variables, and the preceding setting is the new system include