php+mysql实现简单的增删改查功能
本文给大家分享的是使用php结合mysql实现简单的增删改查的功能的代码
列表代码
<?php
$con = mysql_connect("localhost:3306","root","");
if (!$con) {
die('Could not connect: ' . mysql_error());
}
mysql_SELECT_db("test", $con);
$result = mysql_query("SELECT * FROM user");
echo "<table border='1'>
<tr>
<th>Username</th>
<th>Password</th>
</tr>";
while($row = mysql_fetch_array($result)) {
echo "<tr>";
echo "<td>" . $row['username'] . "</td>";
echo "<td>" . $row['password'] . "</td>";
echo "</tr>";
}
echo "</table>";
mysql_close($con);
?>删除
<?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);
?>添加
<?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);
?>修改
<?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);
?><html> <head> <title>用PHP向数据库中实现简单的增删改查</title> </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>Delete</h1> <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>Update</h1> <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>
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