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This article mainly shows you "how to use include sentences in php", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "how to use include sentences in php" this article.

The server side contains (SSI) to create functions, headers, footers, or elements that can be reused on multiple pages. The include (or require) statement takes all the text / code / tags that exist in the specified file and copies them to the file that uses the include statement. Include files are useful if you need to reference the same PHP, HTML, or text on multiple pages of a Web site.

PHPinclude and require statements

With include or require statements, you can insert the contents of an PHP file into another PHP file (before the server executes it).

The include and require statements are the same, except for error handling:

Require generates a fatal error (E_COMPILE_ERROR) and stops the script

Include only generates warnings (E_WARNING), and the script continues

Therefore, if you want to continue execution and output the results to the user, even if the include file is missing, use include. Otherwise, always use require to reference key files to the execution flow in framework, CMS, or complex PHP application programming. This helps improve the security and integrity of the application in the event of an accidental loss of a critical file.

Including files saves a lot of work. This means that you can create a standard header, footer, or menu file for all pages. Then, when the header needs to be updated, you only need to update the header containing the file.

Grammar.

Include'filename'

Or

Require'filename'

PHPinclude instance

Suppose we have a standard footer file called "footer.php", like this:

To reference this footer file in a page, use the contains statement:

Welcome to our home page!

A piece of text.

A piece of text.

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