0

I have the following functions:

function test($post_id){

do_action('test_action',$post_id);

echo $post_id;

}

add_action('test_action',function($post_id){

if ( $post_id == 2 ) //Stop test function execution

}

Using the function hooked to add_action, how to stop the execution of test() function without adding any code to test(). In the above example, if $post_id == 2 , the echo $post_id; code should not run in test().

3
  • This doesn't make sense to me, but if you want to stop code from executing in a function as a certain point, you can add return, or you can wrap the code in a conditional May 22, 2022 at 13:59
  • I meant that using add_action hook, how to stop the execution of test() function with contains do_action. In the above example, if $post_id == 2 , the echo $post_id; code should not run in test()
    – dc09
    May 22, 2022 at 14:02
  • 1
    You can’t. You can use exit but that would stop absolutely everything else from continuing. May 22, 2022 at 15:48

2 Answers 2

-1

The usual way to add an action hook is more like this:

// ... some other code
do_action( 'my_action', $post_id );

// ...elsewhere
add_action( 'my_action', 'wpse405965_function' );
/**
 * Function hooked to my_action
 *
 * @param int $post_id The post ID.
 */
function wpse405965_function( $post_id ) {
    if ( 2 !== $post_id ) {
        echo $post_id;
    }
}

The way you've wrapped the do_action() inside a function confuses me. It seems extraneous.

Reference

-1

You have both registered and called action hooks, did you know you could do the same with filters? This answer uses a filter to call a return; statement as the community suggested, to do an early return and stop executing the rest of test function body (echo in your case).

function test($post_id)
{
    do_action('test_action', $post_id);

    if ( apply_filters('wpse_405965_stop_execution', false) )
        return;

    echo $post_id;
}

add_action('test_action', function($post_id)
{
    if ( $post_id == 2 ) // Stop test function execution
        add_filter('wpse_405965_stop_execution', '__return_true');
});
2
  • 1
    Thanks for the info, a plugin I was using had the above code and I did not want to edit the core code of the plugin, hence was trying to figure out a way to achieve this via add_action
    – dc09
    May 25, 2022 at 5:35
  • Yep. That's the best way to go about customising/extending a plugin - especially when the authors were kind enough to include filters and action hooks.
    – Ismail
    May 25, 2022 at 15:09

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