jitesh.tandel

Here is the full function that I am using right now.Please check and correct it on your website.

public function es_add_subscriber() {

		// check_admin_referer( 'es-subscribe', 'es-subscribe' );

		$es_response = array( 'error' => 'unexpected-error' );

		if ( ( isset( $_REQUEST['es'] ) ) && ( $_REQUEST['es'] == 'subscribe' ) && ( isset( $_REQUEST['action'] ) ) && ( $_REQUEST['action'] == 'es_add_subscriber' ) && !empty( $_REQUEST['esfpx_es-subscribe'] ) ) {
			$es_subscriber_name = '';
			$es_subscriber_email = '';
			$es_subscriber_group = '';

			foreach ($_REQUEST as $key => $value) {
				$new_key = str_replace('_pg', '', $key);
				$_REQUEST[$new_key] = $value;
			}

			$es_subscriber_name  = isset( $_REQUEST['esfpx_es_txt_name'] ) ? $_REQUEST['esfpx_es_txt_name'] : '';
			$es_subscriber_email = isset( $_REQUEST['esfpx_es_txt_email'] ) ? $_REQUEST['esfpx_es_txt_email'] : '';
			$es_subscriber_group = isset( $_REQUEST['esfpx_es_txt_group'] ) ? $_REQUEST['esfpx_es_txt_group'] : '';
			$es_nonce 			 = $_REQUEST['esfpx_es-subscribe'];

			$es_subscriber_name  = trim( $es_subscriber_name );
			$es_subscriber_email = trim( $es_subscriber_email );
			$es_subscriber_group = trim( $es_subscriber_group );

			$subscriber_form = array(
									'es_email_name' => '',
									'es_email_mail' => '',
									'es_email_group' => '',
									'es_email_status' => '',
									'es_nonce' => ''
								);

			if( $es_subscriber_group == '' ) {
				$es_subscriber_group = 'Public';
			}

			if ( $es_subscriber_email != '' ) {
                $es_response = array();
				if ( !filter_var( $es_subscriber_email, FILTER_VALIDATE_EMAIL ) ) {
					$es_response['error'] = 'invalid-email';
				} else {
					$home_url = home_url();
					$same_domain = strpos( $_SERVER['HTTP_REFERER'] , $home_url );
					if ( $same_domain !== false && $same_domain < 5 ) {
						$action = '';
						global $wpdb;

						$subscriber_form['es_email_name'] = $es_subscriber_name;
						$subscriber_form['es_email_mail'] = $es_subscriber_email;
						$subscriber_form['es_email_group'] = $es_subscriber_group;
						$subscriber_form['es_nonce'] = $es_nonce;

						$es_optintype = get_option( 'ig_es_optintype' );

						if( $es_optintype == "Double Opt In" ) {
							$subscriber_form['es_email_status'] = "Unconfirmed";
						} else {
							$subscriber_form['es_email_status'] = "Single Opt In";
						}

						$action = es_cls_dbquery::es_view_subscriber_widget($subscriber_form);
						if( $action == "sus" ) {
							$subscribers = array();
							$subscribers = es_cls_dbquery::es_view_subscriber_one($es_subscriber_email,$es_subscriber_group);
							if( $es_optintype == "Double Opt In" ) {
								es_cls_sendmail::es_sendmail("optin", $template = 0, $subscribers, "optin", 0);
                                $es_response['success'] = 'subscribed-pending-doubleoptin';
							} else {
								$es_c_usermailoption = get_option( 'ig_es_welcomeemail' );
								if ( $es_c_usermailoption == "YES" ) {
									es_cls_sendmail::es_sendmail("welcome", $template = 0, $subscribers, "welcome", 0);
								}
								$es_response['success'] = 'subscribed-successfully';
							} 
						} elseif( $action == "ext" ) {
							$es_response['success'] = 'already-exist';
						} elseif( $action == "invalid" ) {
							$es_response['error'] = 'invalid-email';
                        }else{
                            $es_response['error'] = 'unexpected-error';
                        }
					} else {
						$es_response['error'] = 'unexpected-error';
					}
				}
			}
		}

		echo json_encode($es_response);
		die();
	}