真的我試過很多方法，看過很多視頻，明明是一樣的代碼，為什麼我的都是不成功，別人的我不知道...很煩啊，未成功提示框也不顯示錯誤點在哪，感覺要崩潰了0_0
login.php：
<!DOCTYPE>
<html>
#<head>
<meta charset="utf-8">
<title>登入</title>
<script>
##阿function init(){ if(myform.username.value==""){## alert("請輸入使用者名稱");## 移動到文字方塊中 myform.username.focus(); return false;## ""){
alert("請輸入密碼");
myform.userpwd.focus();
## ### if(myform.code.value==""){
alert("請輸入驗證碼");
fomyform.code.code.
# return false;# } } </script>##1 .code{卷font-weight: bold;
position: relative;
# background-color:#f0f0f0;
width: 230px;
}
##<body>
<form action="logincheck.php" method="post" name="myform">
<div>
<div>使用者登入</div>
</div>
<div>
<span<div>
<span<div>
; ;
<span><input type="text" name="username" id="username" placeholder="請輸入使用者名稱"></span>
</div>
<div>
<span>密碼：</span>
<span><input type="text## <span><input type="text## <span><input type="text" name="userpwd><input type="text" name="userpwd><input type="text" name="userpwd><input type="text" name="userpwd> " id="userpwd" placeholder="請輸入密碼"></span>
</div>
<div>
o# # < ;驗證碼：</span> <span><input type="text" name="code" id="code" class ="code" placeholder= "請輸入驗證碼"></span> <!-- <span><img src="img.php" onclick="this.src='pic.php? nocache=' Math.random()" style="cursor:pointer"></span> --> <span><img src="img.php"><span><img src="img.php">< ;/span> </div> <div> <span><button>立即登入</button> ; <span><a href="register.php">註冊</a></span> </div><span><input type="hidden" value="hidden"></span>
#</form>
##< /body></html>regcheck.php<?phpheader("content-Type: text/html; charset=Utf-8");session_start();//註冊處理頁面regcheck.phpif (isset($_POST["hidden"]) &&$_POST["hidden"]=="hidden") {$user=trim($_POST["username"]);//使用trim函數移除字串兩側的空白字元$pwd=md5(trim($_POST["userpwd"]));$pwd_confirm=md5(trim($_POST["confirm"])); #$code=$_POST["code"];if($user==""||$pwd==""||$pwd_confirm==""){ // echo "<script>alert("請確認訊息完整性"):history.go(-1);</script>";}elseif ($code!=$_SESSION[ "var_code"]) {// echo "<script>alert("驗證碼不正確"):history.go(-1);</script>";}else{if ($pwd==$pwd_confirm) {$conn=mysql_connect("localhost","root","a123456");//連結資料庫的帳號密碼if (mysqli_errno($conn)) {echo mysqli_errno($conn);exit;#}# mysqli_select_db($conn,"userdb");//選擇資料庫mysqli_set_charset($conn,"utf8");//設定字元集// $sql="select username from USER where username='$user'";//sql語句$sql = "SELECT * FROM `user` PROCEDURE ANALYSE()";#// mysql_query(query)$result=mysqli_query($conn,$sql);//執行SQL語句 $num = mysqli_num_rows($result); //統計執行結果影響的行數 if($num) //如果已經存在該使用者 { echo "<script>alert('使用者名稱已存在'); history .go(-1);</script>"; } else //不存在目前註冊使用者名稱 { #$ ip=ip2long($_SERVER['REMOTE_ADDR']); // 把ip位址轉換成整數$time=time();$sql_insert = "insert into `user` (`username`,`userpwd`,`createtime`,`createip`) values('" . $user . "','" . $psw ."','".$time."','".$ ip."')"; //$sql = "SELECT * FROM `user` PROCEDURE ANALYSE()";$res_insert = mysqli_query($conn,$sql_insert); if($res_insert) { echo "<script>alert('註冊成功！ ');window.location.href='login.php';</script>"; } else { #echo "<script>alert('系統繁忙，請稍候！'); history.go(-1);</script>";}
}
}
else
{
echo "<script>alert('密碼不一致！ '); history.go(-1);</script>";
#}
}
#}
#else
##{ // echo "<script>alert('提交未成功！');</script>";echo "<script>alert('weichenggong ');</script>"; } ?> logincheck.php<?phpheader("content-Type: text/html; charset=Utf-8");session_start();//登入處理介面logincheck.php# //判斷是否按下提交按鈕 if(isset($_POST["hidden"]) && $_POST["hidden"] == "hidden") # {//將使用者名稱和密碼存入變數中，供後續使用$user = trim($_POST["username"]);//trim()函數移除字串兩側的空白字元$psw = md5(trim($_POST["userpwd"]));//密碼使用md5()加密一次，存入資料庫
##$code = $_POST[ "code"];
if($user == "" || $psw == "")
{
//使用者名稱或密碼其中之一為空，則彈出對話框，確定後返回目前頁的上一頁
echo "<script>alert('請輸入使用者名稱或密碼！'); history.go(-1); </script>";
}else if($code != $_SESSION[' ver_code']){
echo "<script>alert('驗證碼不正確，請重新輸入！'); history.go(-1);</script>";
#}
else
##{ //確認使用者名稱密碼驗證碼不為空，則連接資料庫$conn = mysqli_connect("localhost","root","a123456");//資料庫帳號密碼為安裝資料庫時設定if( mysqli_errno($conn)){echo mysqli_errno($conn);exit;}#mysqli_select_db($conn,"userdb") ; mysqli_set_charset($conn,'utf8'); $sql = "select username,userpwd from user where username = '$user' and userpwd = '$psw'"; //$sql = "SELECT * FROM `user` PROCEDURE ANALYSE()";$result = mysqli_query($conn,$sql); #$num =##$num = mysqli_num_rows($result);
if($num)
{
echo "<script>alert('成功登入'); window.location.href= 'index.php';</script>";
#### } ###### else ###### { ####### echo "<script>alert('用戶名或密碼不正確！ ');history.go(-1);</script>"; ###### } ###### } ###### } ###### else #### ## { ###echo "";
}
？>
register.php
#
