我得到這個錯誤,我不明白爲什麼。我已經花了好幾個小時了,試着通過調查研究它,但沒有運氣。SQL查詢錯誤?
在我的PHP登錄系統,我檢查是否選擇該行:
//Start session
session_start();
//Include database connection details
require_once('config.php');
//Array to store validation errors
$errmsg_arr = array();
//Validation error flag
$errflag = false;
//Connect to mysql server
$link = mysql_connect(DB_HOST, DB_USER, DB_PASSWORD);
if(!$link) {
die('Failed to connect to server: ' . mysql_error());
}
//Select database
$db = mysql_select_db(DB_DATABASE);
if(!$db) {
die("Unable to select database");
}
//Prevent SQL injection.
function clean($str) {
$str = @trim($str);
if(get_magic_quotes_gpc()) {
$str = stripslashes($str);
}
return mysql_real_escape_string($str);
}
//Sanitize the POST values
$login = clean($_POST['login']);
$password = clean($_POST['password']);
//Input Validations
if($login == '') {
$errmsg_arr[] = 'Login ID missing';
$errflag = true;
}
if($password == '') {
$errmsg_arr[] = 'Password missing';
$errflag = true;
}
//If there are input validations, redirect back to the login form
if($errflag) {
$_SESSION['ERRMSG_ARR'] = $errmsg_arr;
session_write_close();
echo "input validation";
exit();
}
//Create query
$qry="SELECT * FROM details WHERE USERNAME='$login' AND PASSWORD='".md5($_POST['password'])."'";
$result=mysql_query($qry);
//Check whether the query was successful or not
if($result) {
if(mysql_num_rows($result) == 1) {
//Login Successful
session_regenerate_id();
$member = mysql_fetch_assoc($result);
$_SESSION['MEMBER_ID'] = $member['USERNAME'];
session_write_close();
header("location: client-index.php");
exit();
}else {
//Login failed
echo "login failed?";
exit();
}
}else {
die("Query failed");
}
?>
它回聲「失敗」,無論出於何種原因。
我們可以看到html部分嗎?我的第一個猜測是,你的文章不是submited –
整個頁面只是PHP。 –
$ _POST變量來自哪裏? –