PHP programs use a common term like require and include. The ultimate choice of whether to use require or include should be based on the situation, though include offers more freedom.
Require indicates that a specific file is not mandatory while include produces a warning that ensures the continued execution in the event the file does not exist. When it comes to the conditional inclusion of a specific file, the use of include is preferred to the use of required.
When it comes to the execution problem, require produces a fatal error in the event of an execution problem while include does not. Require halts everything in a specific file when an error has occurred while include does not halt everything when an error has occurred. Lastly, include only give a warning and continue to execute.
Tara Pele, Technical Blogger, MCA from New York, New York
Answered Oct 03, 2019
Require and Include are two different terms commonly used in PHP programming. Both terms are a bit identical, but they differ in the way they handle errors. Include () is used to include a file, and if the file is not found, it will pop up a warning, and the remaining scripts will be executed.
It is often used when the specific file is not required for the application to continue to run. Require () on the other hand will show an error message if it fails to find the file. Unlike Include, Require will stop the execution of the remaining script. Therefore, the nature of the file will determine which of the terms you used. If the file is vital to the rest of the script to run, then you are likely to use Require.
Require and include are two terms that are used in PHP programming. Although they might be performing similar functions, there are some differences between them. The first noticeable difference between the two terms is actually how each performs its operation when a certain file does not exist. Require simply means a file that must be attached regardless of how many times you will have to do that; this means you can include as many as you want.
However, in a situation where a certain file does not exist, the execution of the operation will stop because it will produce an error. Include, on the other hand, will continue the operation regardless of whether a given file exists or not. Basically, the main difference is how both handle errors. Include will continue the operation and will allow the processing of the page, whereas it is not so with require
Require and include are terms used in PHP. Both are being used to carry out different functions in PHP and are written in this form include (), require (). However, it is essential to note that both are not functions but are referred to as constructs. The main difference between them is that include (), is used to include a specified file, firstly it gives a warning if it could not find the file to include, and then continue the script execution. While for require (), it also includes specified folder, but if the file has been added already, it will not cover it again, it will give a fatal error. If it is unable to find the file, it will stop the script execution.
If the data being included is critical to the rest of the script running correctly, then you need to use require. When going through the code building process, you are quickly going to notice fatal errors if any thrown by requiring and you can, therefore, make needed corrections before finally completing the script. However, you should perhaps use include to prepare an alternative strategy if things didn't go as smoothly as planned.