PHP dynamic web page programming: comparison between include () and require ()

Php's require () performance is similar to include. The difference is that for include (), the file is read and evaluated each time when the include () is executed; For require (), the file is processed only once (in fact, the file content is changed to requi

Php's require () performance is similar to include.

The difference is that for include (), the file is read and evaluated each time when the include () is executed; For require (), the file is processed only once (in fact, file content is replaced by The require () statement ).

This means that if there is code containing one of these commands and code that may be executed multiple times, the application require () is more efficient. On the other hand, if different files are read each time the code is executed, or there is a loop through a set of file stacks, the include () application will be applied (), because you can set a variable for the file name you want to include, this variable is applied when the parameter is include.