Vanilla PHP

Question 1

PHP $_GET

Answer 1

PHP $_GET is a PHP super global variable which is used to collect form data after submitting an HTML form with method=”get”.

$_GET can also collect data sent in the URL.

Question 1

Print_r()

Answer 1

The print_r() function prints the information about a variable in a more human-readable way.

Question 2

what is the xampp stack

Answer 2

Apache MariaDB PHP Perl

Question 3

what is require_once

Answer 3

require_once is a built-in language construct in PHP. It is used to include and evaluate a specified file during the execution of the script. The key feature of require_once is that it ensures the file is included only once, even if it is called multiple times. This prevents issues such as function redefinitions, variable redeclarations, and other potential conflicts that can arise from including the same file multiple times.

Key Points about require_once
Inclusion and Evaluation:

require_once includes and evaluates the specified file.
If the file has already been included, it will not be included again.

Error Handling:

If the file cannot be included (e.g., it does not exist), require_once will generate a fatal error and halt script execution.
This behavior is similar to require, but differs from include and include_once, which generate warnings instead of fatal errors.
Usage:

Typically used to include files that contain functions, classes, or configuration settings that need to be available throughout the script.
Helps in organizing code by separating logic into different files and including them as needed.

Question 4

what is this function used for most likely et_common_setup();

Answer 4

Purpose in Context

Initialization: et_common_setup is likely performing essential initialization tasks that need to be done for the theme or plugin to function correctly.

Modularity: By encapsulating these tasks in a function, the code becomes more modular and easier to manage. You can call this function from different parts of your theme or plugin to ensure the setup is done.

Conclusion
The line et_common_setup(); calls a function that performs setup tasks for your WordPress theme or plugin. To understand its exact purpose, you would need to find its definition in your theme or plugin files. This function helps in initializing and setting up various components required for your theme or plugin to work properly.