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我正在为我的网站创建一个用户帐户系统，但是当我使用该 include 'core/init.php';功能时出现错误。这可能是一件非常简单的事情，因为我是一个初学者并且正在学习。 

Fatal error: Cannot redeclare user_data() (previously declared in C:\xampp\htdocs\PatchMyPC\core\functions\users.php:3) in C:\xampp\htdocs\PatchMyPC\core\functions\users.php on line 17

这是我的 users.php 和 init.php 文件的代码

初始化文件

<?php
session_start();
//error_reporting(0);

require 'database/connect.php';
require 'functions/users.php';
require 'functions/general.php';

if (logged_in() === true) {
    $session_user_id = $_SESSION['user_id'];
    $user_data = user_data($session_user_id, 'user_id', 'username', 'password', 'first_name', 'last_name', 'email');
    if (user_active($user_data['username']) === false) {
        session_destroy();
        header('Location: index.php');
        exit();
    }
}

$errors = array();

?>

用户.php

<?php

function user_data($user_id) {
$data = array();
$user_id = (int)$user_id;

$func_num_args = func_num_args();
$func_get_args = func_get_args();

if ($func_num_args > 1) {
    unset($func_get_args[0]);

    $fields = '`' . implode('`, `', $func_get_args) . '`';
    $data = mysql_fetch_assoc(mysql_query("SELECT $fields FROM `users` WHERE `user_id` = $user_id"));
    return $data;
}
}

function logged_in() {
    return (isset($_SESSION['user_id'])) ? true : false;
}

function user_exists($username) {
    $username = sanitize($username);
    return (mysql_result($query = mysql_query("SELECT COUNT(`user_id`) FROM `users` WHERE `username` = '$username'"), 0) == 1) ? true : false;
}

function user_active($username) {
    $username = sanitize($username);
    return (mysql_result($query = mysql_query("SELECT COUNT(`user_id`) FROM `users` WHERE `username` = '$username' AND `active` = 1"), 0) == 1) ? true : false;
}

function user_id_from_username($username) {
    $username = sanitize($username);
    return mysql_result(mysql_query("SELECT `user_id` FROM `users` WHERE `username` = '$username'"), 0, 'user_id');
}

function login($username, $password) {
    $user_id = user_id_from_username($username);

    $username = sanitize($username);
    $password = md5($password);

    return (mysql_result(mysql_query("SELECT COUNT(`user_id`) FROM `users` WHERE `username` = '$username' AND `password` = '$password'"), 0) ==1) ? $user_id : false;
}
?>
4

1 回答 1

1

可能您需要 users.php 两次。

采用：

require_once('users.php');

在您的所有文件中以克服此问题。

于 2013-01-28T21:43:29.683 回答