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The "include" keyword is used in PHP to include a file in the current script. In this article, we will explore the syntax and usage of the "include" keyword in depth, and provide plenty of examples to help you master this important PHP feature.
How to Use PHP Includes: Using PHP includes is straightforward. Developers can use the following steps to include code in their PHP pages: Create a PHP file that contains the code you want to include. Use the include or require function to include the file in your PHP page. Save the PHP file and upload it to your server. Best Practices for ...
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.
The "include_once" keyword is used in PHP to include a file in the current script, but only if it has not already been included. In this article, we will explore the syntax and usage of the "include_once" keyword in depth, and provide plenty of examples to help you master this important PHP feature.
Before using php's include, require, include_once or require_once statements, you should learn more about Local File Inclusion (also known as LFI) and Remote File Inclusion (also known as RFI). As example #3 points out, it is possible to include a php file from a remote server.
To include a file using the include() function, you simply call the function (as you would any other function) and insert the file path as a parameter. Syntax: include ('fileName');
You can then require_once the file containing the function inside each file where you need it, and be sure that it is included exactly once regardless of how many times you attempt to include it. An example: file1.php function test() { } index.php require_once('file1.php'); include('table_of_contents.php'); test();
