Focus on the red mark statement.
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.PHP include and require Statements
It is possible to insert the content of one PHP file into another PHP file (before the server executes it), with the include or require statement.
The include and require statements are identical, snapshot T upon failure:
So, if you want the execution to go on and show users the output, even if the include file is missing, use the include statement. otherwise, in case of FrameWork, CMS, or a complex PHP application coding, always use the require statement to include a key file to the flow of execution. this will help avoid compromising your application's security and integrity, just in-case one key file is accidentally missing.
Including files saves a lot of work. this means that you can create a standard header, footer, or menu file for all your web pages. then, when the header needs to be updated, you can only update the header include file.Syntaxinclude' Filename';
Assume we have a standard footer file called "footer. php", that looks like this:Echo"
Copyright©1999-". date (" Y ")." W3Schools.com";
To include the footer file in a page, use the include statement:Example
Some more text.
Assume we have a standard menu file called "menu. php ":Echo 'home-
All pages in the Web site shocould use this menu file. Here is how it can be done (we are using
Element so that the menu easily can be styled with CSS later ):Example
Some more text.
Assume we have a file called "vars. php", with some variables defined:$ Color = 'red ';
Then, if we include the "vars. php" file, the variables can be used in the calling file:Example
The require statement is also used to include a file into the PHP code.
However, there is one big difference between include and require; when a file is wrongly Ded withIncludeStatement and PHP cannot find it, the script will continue to execute:Example
If we do the same example usingRequireStatement, the echo statement will not be executed because the script execution dies after the require statement returned a fatal error:Example
|UseRequireWhen the file is required by the application.
UseIncludeWhen the file is not required and application shocould continue when file is not found.
Attention focuses on the red mark statement. The include (or require) statement takes all the text/code/markup that exists in the specified file and...