What is PHP require?

The include (or require ) statement takes all the text/code/markup that exists in the specified file and copies it into the file that uses the include statement. Including files is very useful when you want to include the same PHP, HTML, or text on multiple pages of a website.

How does PHP require work?

The Require() function is also used to put data of one PHP file to another PHP file. If there are any errors then the require() function produces a warning and a fatal error and stops the execution of the script i.e. the script will continue to execute.

What is require and require once in PHP?

The require_once keyword is used to embed PHP code from another file. If the file is not found, a fatal error is thrown and the program stops. If the file was already included previously, this statement will not include it again.

What is difference between require and include in PHP?

include() Vs require() The only difference is that the include() statement generates a PHP alert but allows script execution to proceed if the file to be included cannot be found. At the same time, the require() statement generates a fatal error and terminates the script.

What’s the difference between include and require?

The include() function is mostly used when the file is not required and the application should continue to execute its process when the file is not found. The require() function is mostly used when the file is mandatory for the application.

What is Cookies PHP?

A cookie is often used to identify a user. A cookie is a small file that the server embeds on the user’s computer. Each time the same computer requests a page with a browser, it will send the cookie too. With PHP, you can both create and retrieve cookie values.

Should I use require or require_once?

Require means it needs it. Require_once means it will need it but only requires it once. Include means it will include a file but it doesn’t need it to continue.

What is the difference between require () and require_once ()?

require_once() The require() function is used to include a PHP file into another irrespective of whether the file is included before or not. The require_once() will first check whether a file is already included or not and if it is already included then it will not include it again.

How do I run PHP?

You just follow the steps to run PHP program using command line.

  1. Open terminal or command line window.
  2. Goto the specified folder or directory where php files are present.
  3. Then we can run php code code using the following command: php file_name.php.