我正在制作照片库,作为学习PHP的一部分。我的目录结构如下所示:
includes
logs
public
在includes目录中,我有以下文件:
config.php
database.php
functions.php
文件内部:
config.php
:
// Setup MySQL database connection
<?php
defined('DB_SERVER') ? null : define("DB_SERVER", "localhost"); // db server (usually localhost)
defined('DB_USER') ? null : define("DB_USER", "root"); // db user
defined('DB_PASS') ? null : define("DB_PASS", "usbw"); // db pass
defined('DB_NAME') ? null : define("DB_NAME", "photo_gallery"); // db name
?>
database.php
:
<?php
require_once("config.php");
class MySQLDatabase {
private $connection;
function __construct() {
$this->open_connection();
}
public function open_connection() {
$this->connection = mysqli_connect(DB_SERVER, DB_USER, DB_PASS);
if (!$this->connection) {
die("Database connection failed: " . mysql_error());
} else {
$db_select = mysql_select_db(DB_NAME, $this->connection);
if (!$db_select) {
die("Database connection failed: " . mysql_error());
}
}
}
public function close_connection() {
if (isset($this->connection)) {
mysql_close($this->connection);
unset($this->connection);
}
}
public function query($sql) {
$result = mysql_query($sql, $this->connection);
$this->confirm_query($result);
return $result;
}
public function mysql_prep($value) {
$magic_quotes_active = get_magic_quotes_gpc();
$new_enough_php = function_exists("mysql_real_escape_string"); // i.e. PHP >= 4.3.0 or higher
if ($new_enough_php) { // PHP >= 4.3.0 or higher
// undo any magic quote effects so mysql_real_escape_string can do the work
if ($magic_quotes_active) {
$value = stripslashes($value);
}
$value = mysql_real_escape_string($value);
} else { //before PHP v4.3.0
// if magic quotes aren't already on then add slashes manually
if (!$magic_quotes_active) {
$value = addslashes($value);
}
// if magic quotes are active, then slashes already exist
}
return $value;
}
private function confirm_query($result) {
if (!$result) {
die("Database connect failed " . mysql_error());
}
}
}
$database = new MySQLDatabase();
$db =& $database;
?>
我在public -> index.php
中创建了以下代码来测试连接:
<?php
require_once("../includes/database.php");
if (isset($database)) { echo "true"; } else { echo "false"; }
echo "<br />";
?>
当我在浏览器中加载此页面时,遇到以下错误:
Warning: mysql_select_db() expects parameter 2 to be resource, object given in D:\root\photo_gallery\includes\database.php on line 17
Database connection failed:
我已尝试删除$this->connection
并且只有DB_NAME
但是我被告知它无法连接到"@"localhost
。谁能告诉我我做错了什么?
答案 0 :(得分:2)
您正在将mysqli与mysql混合
$this->connection = mysqli_connect(DB_SERVER, DB_USER, DB_PASS);
并使用
mysql_select_db(DB_NAME, $this->connection);
使用mysqli_select_db
http://in3.php.net/mysqli_select_db
此外,你拥有mysql_ *的所有功能,他们也需要一些照顾。