下面小编就为大家带来一篇使用PHP连接数据库_实现用户数据的增删改查的整体操作示例。小编觉得挺不错的，现在就分享给大家，也给大家做个参考。一起跟随小编过来看看吧
main页面(主页面)
$db = new MySQLi("localhost","root","","mydb");
if(mysqli_connect_error()){
die("连接失败");
}
$sql = "select * from Info";
$result = $db->query($sql);
$attr = $result->fetch_all();
foreach($attr as $v)
{
$sex = $v[2]? '男':'女';//三元运算符判断性别
$sql = "select Name from Nation where Code ='$v[3]'";
$result = $db ->query($sql);
$attr = $result->fetch_assoc();
echo "
{$v[0]}{$v[1]}{$sex}{$attr['Name']}{$v[4]}
删除
修改
";
}
?>
添加数据
Add(添加数据页面)
添加数据
代号：
姓名：
性别：
男
女
民族:
$db = new MySQLi("localhost","root","","mydb");
if(mysqli_connect_error()){
die("连接失败");
}
$sql = "select * from Nation";
$r = $db->query($sql);
$att = $r->fetch_all();
foreach($att as $v)
{
echo "{$v[1]}";
}
?>
生日：
AddChuLi页面(添加数据处理页面)
$code = $_POST["code"];
$name = $_POST["name"];
$sex = $_POST["sex"];
$s = 1;
if($sex =="女")
{
$s=0;
}
$nation = $_POST["nation"];
$birthday = $_POST["birthday"];
$db = new MySQLi("localhost","root","","mydb");
if(mysqli_connect_error()){
die("连接失败");
}
$sql = "insert into Info values('{$code}','{$name}','{$s}','{$nation}','{$birthday}')";//添加数据语句
$result = $db->query($sql);
if($result)
{
header("location:main.php");//php跳转页面方式
}
else
{
echo "添加失败！";
}
DeleteChuLi页面(删除数据处理页面)
$code = $_GET["code"];
$db = new MySQLi("localhost","root","","mydb");
if(mysqli_connect_error()){
die("连接失败");
}
$sql = "delete from Info where Code ='{$code}'";//删除语句
$r = $db->query($sql);
if($r)
{
header("location:main.php");
}
else
{
echo "删除失败！";
}
Update页面(修改数据页面)
修改数据
$code = $_GET["code"];
$db = new MySQLi("localhost","root","","mydb");
if(mysqli_connect_error()){
die("连接失败");
}
$sql1 = "select * from Info where Code='{$code}'";
$r1 = $db->query($sql1);
$att1 = $r1->fetch_row();
?>
代号：
姓名：
性别：
/>男
/>女
民族:
$db = new MySQLi("localhost","root","","mydb");
if(mysqli_connect_error()){
die("连接失败");
}
$sql = "select * from Nation";//查询nation一组数据
$r = $db->query($sql);
$att = $r->fetch_all();
foreach($att as $v)
{
if($att1[3]==$v[0])
{
echo "{$v[1]}";
}
else
{
echo "{$v[1]}";
}
}
?>
生日：
ateChuLi页面(修改数据处理页面)
$code = $_POST["code"];
$name = $_POST["name"];
$sex = $_POST["sex"];
$s=1;
if($sex=="女")
{
$s=0;
}
$nation = $_POST["nation"];
$birthday = $_POST["birthday"];
$db = new MySQLi("localhost","root","","mydb");
if(mysqli_connect_error()){
die("连接失败");
}
$sql = "update Info set Name='{$name}',Sex={$s},Nation='{$nation}',Birthday='{$birthday}' where Code='{$code}'";//修改数据语句
$r = $db->query($sql);
if($r)
{
header("location:main.php");
}
else
{
echo "修改失败！";
}
