首先，通过电话号码获取用户。

$user = reset(
    get_users(
        array(
            \'meta_key\' => \'PHONE_META_KEY_HERE\',
            \'meta_value\' => $USER_PHONE_NO_HERE,
            \'number\' => 1,
            \'count_total\' => false
        )
    )
);

if($user){
    if(wp_check_password($USER_PASSWORD_HERE, $user->user_pass, $user->ID)){
        // Success. User login credentials matched. Login user with `wp_set_auth_cookie`.
       wp_clear_auth_cookie();
       wp_set_current_user ( $user->ID );
       wp_set_auth_cookie  ( $user->ID );

       $redirect_to = user_admin_url();
       wp_safe_redirect( $redirect_to );
       exit();
    } else {
        // Throw Error. Password Does not Match.
    }
} else {
    // Throw Error. User not found with phone no.
}