Include & require in php

                

why we require include and require ?

1.when we have to use same lines of code again and again then we use include and require;

          for example->code  for  connection to a database ,we required very freqeuntly so why to insert

some 7-8 to line of code many times in script.

so to save us  include and require comes into the picture.

How include and require work

step 1->>>write the code which you need in a seperate php file;

for example->for connecting to database,we have writen in db_connect.php

step 2--->now wherever you need database connection simply write 

require 'db_connect.php';

or 

include 'db_connect.php'; 

difference between include and require 

suppose the file which you wrote in include and require is not present .

lets say you write 

require 'db_connect1.php';

include 'db_connect1.php';

but db_connect1.php file is not there then in that case 

---->include will not show you the error but----->>>>require will show.