Title: POP3::login
Published: February 3, 2022
Last modified: May 20, 2026

---

# POP3::login( $login = "",  $pass = "" )

## In this article

 * [Source](https://developer.wordpress.org/reference/classes/pop3/login/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/classes/pop3/login/?output_format=md#related)

[ Back to top](https://developer.wordpress.org/reference/classes/pop3/login/?output_format=md#wp--skip-link--target)

## 󠀁[Source](https://developer.wordpress.org/reference/classes/pop3/login/?output_format=md#source)󠁿

    ```php
    function login ($login = "", $pass = "") {
        // Sends both user and pass. Returns # of msgs in mailbox or
        // false on failure (or -1, if the error occurs while getting
        // the number of messages.)

        if( !isset($this->FP) ) {
            $this->ERROR = "POP3 login: " . _("No connection to server");
            return false;
        } else {
            $fp = $this->FP;
            if( !$this->user( $login ) ) {
                //  Preserve the error generated by user()
                return false;
            } else {
                $count = $this->pass($pass);
                if( (!$count) || ($count == -1) ) {
                    //  Preserve the error generated by last() and pass()
                    return false;
                } else
                    return $count;
            }
        }
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/class-pop3.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-includes/class-pop3.php#L213)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-pop3.php#L213-L235)

## 󠀁[Related](https://developer.wordpress.org/reference/classes/pop3/login/?output_format=md#related)󠁿

| Uses | Description | 
| [POP3::user()](https://developer.wordpress.org/reference/classes/pop3/user/)`wp-includes/class-pop3.php` |  | 
| [POP3::pass()](https://developer.wordpress.org/reference/classes/pop3/pass/)`wp-includes/class-pop3.php` |  |

| Used by | Description | 
| [POP3::apop()](https://developer.wordpress.org/reference/classes/pop3/apop/)`wp-includes/class-pop3.php` |  |

## User Contributed Notes

You must [log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fdeveloper.wordpress.org%2Freference%2Fclasses%2Fpop3%2Flogin%2F)
before being able to contribute a note or feedback.