[Solved] What will be the output of this code snippet? function greet() { echo 'Hello!'; } add_action('wp_footer', 'greet'); Assuming the theme calls do_action('wp_footer'); in the footer. | Wordpress

Wordpress - WordPress Hooks System

What will be the output of this code snippet?

function greet() {
  echo 'Hello!';
}
add_action('wp_footer', 'greet');

Assuming the theme calls do_action('wp_footer'); in the footer.

AThe text 'Hello!' will appear in the footer

BNothing will be displayed

CA PHP error will occur

DThe text 'greet' will appear in the footer

Step-by-Step Solution

Solution:

Step 1: Understand add_action and do_action
add_action attaches 'greet' function to 'wp_footer' hook. When do_action('wp_footer') runs, it calls 'greet'.
Step 2: Analyze the greet function output
The greet function echoes 'Hello!', so this text will appear where the footer hook runs.
Final Answer:
The text 'Hello!' will appear in the footer -> Option A
Quick Check:
do_action triggers greet, which echoes 'Hello!' [OK]

Quick Trick: do_action runs hooked functions, output appears where called [OK]

Common Mistakes:

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What will be the output of this code snippet?