How to create shortcode

How to create wordpress shortcodes

// function that runs when shortcode is called
function wpb_demo_shortcode() { 
 
// Things that you want to do. 
$message = 'Hello world!'; 
 
// Output needs to be return
return $message;
} 
// register shortcode
add_shortcode('greeting', 'wpb_demo_shortcode');

Source: wpbeginner.com

How to create shortcode

<?php
function abc()
{}
////create shortcode////
add_shortcode('page_name','abc');
?>

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