[Forminator Pro] - Limit submission by user except admins

forminator-limit-submission-by-user-except-admin.php

<?php
/**
 * Plugin Name: [Forminator Pro] Limit submission by user
 * Description: Limit submission by user except admin
 * Author: Prashant @ WPMUDEV
 * Task: SLS-5808
 * Author URI: https://premium.wpmudev.org
 * License: GPLv2 or later
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}

add_filter( 'forminator_custom_form_submit_errors', function( $submit_errors, $form_id, $field_data_array ) {
    if ( ! is_user_logged_in() ) {
        return $submit_errors;
    }

    if ( current_user_can( 'manage_options' ) ) {
        return $submit_errors;
    }

    // Add your form IDs here.
    $form_ids = array( 1609 );
    // Change this to the message that you want to show.
    $message = 'You cannot submit more than 3 times.';
    if ( in_array( intval( $form_id ), $form_ids, true ) ) {
        $user_id = get_current_user_id();
        if ( ! empty( $user_id ) ) {
            $last_entry = wpmudev_get_last_few_entries( $form_id, $user_id );
            if ( $last_entry ) {
                $GLOBALS['form_limit_error'] = false;
            } else {
                $submit_errors[]['submit'] = $message;
                $GLOBALS['form_limit_error'] = true;
            }
        }
    }
    return $submit_errors;
}, 15, 3 );

function wpmudev_get_last_few_entries( $form_id, $user_id ) {
    global $wpdb;
    $table_name       = Forminator_Database_Tables::get_table_name( Forminator_Database_Tables::FORM_ENTRY_META );
    $entry_table_name = Forminator_Database_Tables::get_table_name( Forminator_Database_Tables::FORM_ENTRY );
    $sql              = "SELECT m.entry_id FROM {$table_name} m LEFT JOIN {$entry_table_name} e ON(e.entry_id = m.entry_id) WHERE e.form_id = %d AND m.meta_key = %s AND m.meta_value = %s order by m.meta_id";
    $entrys           = $wpdb->get_results( $wpdb->prepare( $sql, $form_id, 'hidden-1', $user_id ) );
    if ( $wpdb->last_error ) {
        return false;
    } else {
        if ( count( $entrys ) >= 3 ) {
            return false;
        } else {
            return true;
        }
    }
    return false;
}

add_filter( 'forminator_custom_form_invalid_form_message', 'wpmudev_invalid_form_error_response_submit_msg', 10, 2 );
function wpmudev_invalid_form_error_response_submit_msg( $invalid_form_message, $form_id ) {
	if ( $form_id != 1609 ) { // Please change the form ID.
		return $invalid_form_message;
	}

	if ( $GLOBALS['form_limit_error'] ) {
		$invalid_form_message = __( 'You cannot submit more than 3 times.', 'forminator' );
	}

	return $invalid_form_message;
}