PHP实现简单注册登录系统

本文实例为大家分享了PHP实现简单注册登录系统的具体代码，供大家参考，具体内容如下

目录结构如下，其中function文件夹下包含两个函数文件，uploads文件夹用于存放上传的文件。

注：博主使用的是php5，使用php7的小伙伴运行报错的话有一部分原因是新的语法造成的，修改成新语法就可以了

html页面

登录页面

index.html

<form action=\"login_process.php\" method=\"POST\">登录<input type=\"text\" name=\"userName\" size=\"20\" maxlength=\"15\" placeholder=\"请填写用户名及域名\"><br>注册<input type=\"password\" name=\"password\" size=\"20\" maxlength=\"15\"><br><input type=\"submit\" value=\"登录\"><input type=\"button\" onclick=\"window.location.href=\'register.html\'\" value=\"注册\"></form>

注册页面

<h2>用户注册登录系统</h2><hr><form action=\"register.php\" method=\"POST\" enctype=\"multipart/form-data\">用户名：<input type=\"text\" name=\"userName\" size=\"20\" maxlength=\"15\" placeholder=\"必须填写用户名\">@<select name=\"domain\" id=\"\"><option value=\"@163.com\" selected>163.com</option><option value=\"@126.com\">126.com</option></select><br>登录密码：<input type=\"password\" name=\"password\" size=\"20\" maxlength=\"15\"><br>确认密码：<input type=\"password\" name=\"confirmPassword\" size=\"20\" maxlength=\"15\"><br>选择性别：<input type=\"radio\" name=\"sex\" value=\"male\" checked>男<input type=\"radio\" name=\"sex\" value=\"female\">女<br>个人爱好：<input name=\"interests[]\" type=\"checkbox\" value=\"music\">音乐<input name=\"interests[]\" type=\"checkbox\" value=\"game\">游戏<input name=\"interests[]\" type=\"checkbox\" value=\"film\">电影<br>个人相片<input type=\"hidden\" name=\"MAX_FILE_SIZE\" value=\"1024\"><input type=\"file\" name=\"myPicture\" size=\"25\" maxlength=\"100\"><br>备注信息：<textarea name=\"remark\" cols=\"30\" rows=\"4\" placeholder=\"请填写备注信息\"></textarea><br><input type=\"submit\" name=\"submit\" value=\"注册\"><input type=\"reset\" name=\"cancel\" value=\"重填\"></form>

功能实现文件

实现登录功能
login_process.php

<?phpinclude_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 \"登录成功\";} else {echo \"登录失败\";}closeConnect();?>

实现注册功能

<?phpinclude_once(\"function/fileSystem.php\");include_once(\"function/database.php\");if (empty($_POST)) {exit(\"您提交的表单数据超过post_max_size! <br>\");}// 判断输入密码与确认密码是否相同$password = $_POST[\'password\'];$confirmPassword = $_POST[\'confirmPassword\'];if ($password != $confirmPassword) {exit(\"输入的密码与确认密码不相等！\");}$userName = $_POST[\'userName\'];$domain = $_POST[\'domain\'];$userName = $userName . $domain;// 判断用户名是否重复$userNameSQL = \"select * from users where userName = \'$userName\'\";getConnect();$resultSet = mysql_query($userNameSQL);if (mysql_num_rows($resultSet) > 0) {exit(\"用户名已被占用，请更换其他用户名\");}$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 == \"上传成功\" || $message == \"没有上传\") {mysql_query($registerSQL);$userID = mysql_insert_id();echo \"注册成功<br>\";} else {exit($message);}$userSQL = \"select * from users where user_id = \'$userID\'\";$userResult = mysql_query($userSQL);if ($user = mysql_fetch_array($userResult)) {echo \"您的注册用户名为：\" . $user[\'userName\'];} else {exit(\"用户注册失败！\");}closeConnect();

函数文件（function文件夹）

实现数据库连接与关闭的函数

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());}}?>

实现文件上传的函数

fileSystem.php

<?phpfunction 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 \"上传成功\";case 1:return \"上传超过upload_max_filesize\";case 2:return \"上传文件超过form的MAX_FILE_SIZE\";case 3:return \"附件部分上传\";case 4:return \"没有上传\";}}?>

以上就是本文的全部内容，希望对大家的学习有所帮助

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