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An Introduction to WordPress Action Hooks

actionhook in wordpress

WordPress provide functionality of action hook with which you can create your own action hook can create new action hooks by calling do_action() function and just need to specify the name of the new hook as $tag parameter.Whereas add_action() is used to hooks a function on to a specific action.

SYNTAX for do_action

do_action( $tag, $arg ); 


$tag is the name of the action to be executed.
$arg is an optional argument which are passed on to the functions hooked to the action.

SYNTAX for add_action

add_action( $tag, $function_to_add, $priority, $accepted_args ); 

Here is add_action, same like do_action $tag is the name of the action to be executed.Next argument is the name of the function to add for an action.The third argument defines the priority of code and the fourth argument is for a number of argument in the function.

Here in an example, going to show how to create an action hook that customize the login functionality just before the user logged into the dashboard.

First of,place below code into the wp-login.php file after post request for a form.


Next is use the function, which we can put in the functions.php of the theme to add an action for the login

function login_qry_fn($user){
 global $wpdb;
 $userid =$user->ID;
 $result = $wpdb->get_var("Your_qry");
    	wp_redirect( site_url('wp-login.php') );
       return true;
add_action('login_qry','login_qry_fn',10, 1);

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Comments (5)

  1. Article writing is also a excitement, if you be
    acquainted with after that you can write otherwise it is
    complex to write.

  2. Hi!
    Thanks for the desciption for 4 columns.
    In Step 3. Which one file do i need to add that code?
    footer.php or function.php or sidebar.php?


  3. It is visible that wrote is acquainted with these issues and knows how to present it in a way easily understood for a greenhorn.
    I admit that I”m very interested in this entry despite the fact that I”m not much interested in this subject-matter.

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  5. Mcgoogan says:

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