what require once in php

PHP include and require reprinted from: http://blog.sina.com.cn/s/blog_5d2673da0100cp6o.html? Include and require in different PHP versions of require (), include (), require_once () and include_once () Reprinted from:

 One of the most common PHP problems mentioned during the interview, I would like to share with you the many similarities and differences between require () and include. Understanding their differences is very important, otherwise it is easy to make

Similarities and differences between require (), include (), require_once () and include_once. Require () and include () have many similarities and differences. Understanding their differences is very important, otherwise it is easy to make mistakes.

In php, require-once and phprequire-once. In php, The require-once, phprequire-oncerequire_once statement and require statement are exactly the same, the only difference is that PHP will check whether the file has been included, if so, it will not

Include and require in PHP Reprinted from: http://blog.sina.com.cn/s/blog_5d2673da0100cp6o.html ? Similarities and differences of require (), include (), require_once () and include_once () There are many similarities and differences between

Require-once and phprequire-once in php The require_once statement is identical to the require statement. The only difference is that PHP checks whether the file has been included. If so, it does not include the file again. Refer to the include_once

Php file call and several functions including include_once () require_once () include () require (. The require () statement includes and runs the specified file. The require () statement includes and runs the specified file. For details about how

Require ()The require () statement includes and runs the specified file. The require () statement includes and runs the specified file. For details about how to work, see the include () document. Require () and include () are identical in all

Let's talk about the differences between require (), include (), require_once () and include_once () in php. This article introduces the usage and difference of four types of functions for calling external files in php. For more information, see.

Include () and require () statements include and run the specified file. The two structures are exactly the same on the contained files, and the only difference is the handling of errors. When the require () Statement encounters an error or the