用PHP向数据库中实现简单的增删改查（纯代码，待完善），php增删

用PHP向数据库中实现简单的增删改查（纯代码，待完善），php增删

php $con = mysql_connect("localhost:3306","root",""); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("test", $con); $result = mysql_query("SELECT * FROM user"); echo ""; while($row = mysql_fetch_array($result)) { echo ""; echo ""; echo ""; echo ""; } echo "

Username	Password
" . $row['username'] . "	" . $row['password'] . "

"; mysql_close($con); ?> 从服务器中获取用户所有信息（SQL SELECT语句）并以表格形式出现

php $con = mysql_connect("localhost","root",""); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("test", $con); mysql_query("DELETE FROM user WHERE username = '$_POST[username]'"); mysql_close($con); ?> 删除该用户所有信息delete.php

php $con = mysql_connect("localhost:3306","root",""); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("test", $con); $sql = "INSERT INTO user (username,password) VALUES ('$_POST[username]','$_POST[password]')"; if (!mysql_query($sql,$con)) { die('Error: ' . mysql_error()); } echo "1 record added"; mysql_close($con); ?> 注册一个新用户insert.php

php $con = mysql_connect("localhost","root",""); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("test", $con); mysql_query("UPDATE user SET password = '$_POST[password]' WHERE username = '$_POST[username]'"); mysql_close($con); ?> 修改一个用户密码update.php

html> head> title>FORMtitle> head> body> br /> h1>Insert:h1> form action="insert.php" method="post"> username:input type="name" name="username"/> br /> password:input type="password" name="password"/> input type="submit" value="submit"/> form> br />hr />br /> h1>Deleteh1> form action="delete.php" method="post"> username:input type="name" name="username" /> br /> Are you sure?input type="submit" value="sure" /> form> br />hr />br /> h1>Updateh1> form action="update.php" method="post"> username:input type="name" name="username"/> br /> You want to change your password into:input type="password" name="password"/> input type="submit" value="submit"/> form> br />hr />br /> body> html> 以上三个功能的提交源Operate.html

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