What is the PHP Include and Require Files
PHP Include and Require – Before the server executes this, you can include the content of a PHP file in another PHP file. There are two PHP functions that can be used to get one PHP file included in another PHP file. This is PHP’s strong point helping to build functions, headers, footers, or elements that can be reused on multiple pages. This will help developers make it simple with minimal effort to adjust the architecture of a full website. If any change is needed then change included file instead of changing thousands of files.
PHP Include Files
The include() function takes all the text in a given file and copies it to the file using the include function. If there is some trouble loading a file then an alert is created by the include() function but the execution of the script will continue. You simply call the function (as you would any other function) to include a file using the include function() and insert the file path as a parameter.
PHP Require Files
The require() function takes all of the text in a given file and copies it to the file using the include() function. If there is any trouble loading a file then a fatal error is created by the require() function and the script execution stopped.
So there is no difference in require() and include() except that they treat conditions of error. It is recommended that you use the require() feature instead of include(), so if files are missing or misnamed, scripts will not start running.
include v/s require Statements
You might be thinking if we can include files using the include() statement then why we need to require(). The require() statement usually works like include(). The only difference is — the include() statement will only produce a PHP alert, which will allow the execution of the script to proceed if the file to be included can not be identified, while the require() statement will produce a fatal error and will stop the execution of the script.