本文实例讲述了PHP+MySQL删除操作的使用技巧。分享给大家供大家参考。具体如下:
代码如下:
删除记录
//连接数据库的参数
$host = "localhost";
$user = "root";
$pass = "zq19890319";
$db = "phpdev";
//创建mysqli对象
//打开一个数据库连接
$mysqli = new mysqli($host, $user, $pass, $db);
//检查连接错误
if(mysqli_connect_errno()){
die("Unable to connect!");
}
//如果记录ID存在,则执行删除操作
if(isset($_GET['id'])){
//构造删除记录的SQL
$query = "DELETE FROM symbols WHEREid = ".$_GET['id'];
//执行SQL查询
if($mysqli->query($query)){
//显示删除后影响的记录数
echo $mysqli->affected_rows. "row(s) affected";
}
else
{
//如果没有匹配的记录,显示数据库返回的错误信息
echo "Error in query : $query. ".$mysqli->error;
}
}
//构造显示删除后的记录
$query = "SELECT * FROM symbols";
//执行该查询
if($result=$mysqli->query($query)){
//显示返回的记录集行数
if($result->num_rows>0){
//如果有记录
//显示记录集中列的内容
echo "
".$row[0]." | ";".$row[1]." | ";".$row[2]." | ";删除 | ";

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