本文實例為大家分享了PHP實現簡單注冊登錄系統的具體代碼，供大家參考，具體內容如下
目錄結構如下，其中function文件夾下包含兩個函數文件，uploads文件夾用于存放上傳的文件。
注：博主使用的是php5，使用php7的小伙伴運行報錯的話有一部分原因是新的語法造成的，修改成新語法就可以了
html頁面
登錄頁面
index.html
form action="login_process.php" method="POST">
登錄
input type="text" name="userName" size="20" maxlength="15" placeholder="請填寫用戶名及域名">
br>
注冊
input type="password" name="password" size="20" maxlength="15">
br>
input type="submit" value="登錄">
input type="button" onclick="window.location.href='register.html'" value="注冊">
/form>
注冊頁面
register.html
h2>用戶注冊登錄系統/h2>
hr>
form action="register.php" method="POST" enctype="multipart/form-data">
用戶名：
input type="text" name="userName" size="20" maxlength="15" placeholder="必須填寫用戶名">
@
select name="domain" id="">
option value="@163.com" selected>163.com/option>
option value="@126.com">126.com/option>
/select>
br>
登錄密碼：
input type="password" name="password" size="20" maxlength="15">
br>
確認密碼：
input type="password" name="confirmPassword" size="20" maxlength="15">
br>
選擇性別：
input type="radio" name="sex" value="male" checked>男
input type="radio" name="sex" value="female">女
br>
個人愛好：
input name="interests[]" type="checkbox" value="music">音樂
input name="interests[]" type="checkbox" value="game">游戲
input name="interests[]" type="checkbox" value="film">電影
br>
個人相片
input type="hidden" name="MAX_FILE_SIZE" value="1024">
input type="file" name="myPicture" size="25" maxlength="100">
br>
備注信息：
textarea name="remark" cols="30" rows="4" placeholder="請填寫備注信息">/textarea>
br>
input type="submit" name="submit" value="注冊">
input type="reset" name="cancel" value="重填">
/form>
功能實現文件
實現登錄功能
login_process.php
?php
include_once("function/database.php");
// $userName = $_POST['userName'];
// $password = $_POST['password'];
$userName = addslashes($_POST['userName']);
$password = addslashes($_POST['password']);
getConnect();
$loginSQL = "select * from users where userName='$userName' and password='$password'";
echo $loginSQL;
$resultLogin = mysql_query($loginSQL);
if (mysql_num_rows($resultLogin) > 0) {
echo "登錄成功";
} else {
echo "登錄失敗";
}
closeConnect();
?>
實現注冊功能
register.php
?php
include_once("function/fileSystem.php");
include_once("function/database.php");
if (empty($_POST)) {
exit("您提交的表單數據超過post_max_size! br>");
}
// 判斷輸入密碼與確認密碼是否相同
$password = $_POST['password'];
$confirmPassword = $_POST['confirmPassword'];
if ($password != $confirmPassword) {
exit("輸入的密碼與確認密碼不相等！");
}
$userName = $_POST['userName'];
$domain = $_POST['domain'];
$userName = $userName . $domain;
// 判斷用戶名是否重復
$userNameSQL = "select * from users where userName = '$userName'";
getConnect();
$resultSet = mysql_query($userNameSQL);
if (mysql_num_rows($resultSet) > 0) {
exit("用戶名已被占用，請更換其他用戶名");
}
$sex = $_POST['sex'];
if (empty($_POST['interests'])) {
$interests = "";
} else {
$interests = implode(";", $_POST['interests']);
}
$remark = $_POST['remark'];
$myPictureName = $_FILES['myPicture']['name'];
$registerSQL = "insert into users values(null, '$userName', '$password', '$sex', '$interests', '$myPictureName', '$remark')";
$message = upload($_FILES['myPicture'], "uploads");
if ($message == "上傳成功" || $message == "沒有上傳") {
mysql_query($registerSQL);
$userID = mysql_insert_id();
echo "注冊成功br>";
} else {
exit($message);
}
$userSQL = "select * from users where user_id = '$userID'";
$userResult = mysql_query($userSQL);
if ($user = mysql_fetch_array($userResult)) {
echo "您的注冊用戶名為：" . $user['userName'];
} else {
exit("用戶注冊失敗！");
}
closeConnect();
函數文件（function文件夾）
實現數據庫連接與關閉的函數
database.php
?php
$databaseConnection = null;
function getConnect() {
$hosthome = "localhost";
$database = "register";
$userName = "root";
$password = "123456";
global $databaseConnection;
$databaseConnection = @mysql_connect($hosthome, $userName, $password) or die (mysql_error());
mysql_query("set names gbk");
@mysql_select_db($database, $databaseConnection) or die (mysql_error());
}
function closeConnect() {
global $databaseConnection;
if ($databaseConnection) {
@mysql_close($databaseConnection) or die (mysql_error());
}
}
?>
實現文件上傳的函數
fileSystem.php
?php
function upload($file, $filePath) {
$error = $file['error'];
switch ($error) {
case 0:
$fileName = $file['name'];
$fileTemp = $file['tmp_name'];
$destination = $filePath . "/" . $fileName;
move_uploaded_file($fileTemp, $destination);
return "上傳成功";
case 1:
return "上傳超過upload_max_filesize";
case 2:
return "上傳文件超過form的MAX_FILE_SIZE";
case 3:
return "附件部分上傳";
case 4:
return "沒有上傳";
}
}
?>
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持腳本之家。
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