Get Post ID after front end post submission

by

wp_insert_post() returns either one of three things

  • the newly created post’s ID

  • a WP_Error object if $wp_error is set to true if an error occured during post insertion in which case the post is not inserted

  • 0 if $wp_error is set to false (default) if an error occured during post insertion in which case the post is not inserted

The following should work

$args = [
    // All your post arguments
];
$q = wp_insert_post( $q );
if (    0 != $q 
     && !is_wp_error( $q )
) {
    echo 'My new post ID is ' . $q;
}