[Solved] This code snippet is added to functions.php but causes a fatal error: function my_custom_function() { echo 'Welcome!... What is the error and how to fix it? | Wordpress

Wordpress - Theme Structure and Basics

This code snippet is added to functions.php but causes a fatal error:

function my_custom_function() {
  echo 'Welcome!'
}
add_action('wp_head', 'my_custom_function');

What is the error and how to fix it?

AMissing semicolon after echo statement; add ; after 'Welcome!'

BWrong hook name; change 'wp_head' to 'wp_footer'

CFunction name is invalid; rename function

DEcho cannot be used in functions.php; use return instead

Step-by-Step Solution

Solution:

Step 1: Identify syntax error in PHP code
The echo statement lacks a semicolon at the end of the line, which causes a fatal syntax error.
Step 2: Correct the syntax
Adding a semicolon after 'Welcome!' fixes the error: echo 'Welcome!';
Final Answer:
Missing semicolon after echo statement; add ; after 'Welcome!' -> Option A
Quick Check:
PHP statements need semicolons [OK]

Quick Trick: Check for missing semicolons after PHP statements [OK]

Common Mistakes:

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This code snippet is added to functions.php but causes a fatal error: