2025-02-09

,連接數據庫

<?php


$dbhost = localhost;
$dbuser = root; //你的mysql用戶名
$dbpass = 123456; //你的mysql密碼
$dbname = data; //你的mysql庫名


//連接本地數據庫
$GLOBALS[“conn”] = mysql_connect($dbhost,$dbuser,$dbpass);


//打開數據庫
mysql_select_db($dbname,$GLOBALS[“conn”]);


?>


2.讀取數據庫中,某一字段值


<?php


//讀取一列數據
$sql=”select * from ec_admin”;
$result = mysql_query($sql,$GLOBALS[“conn”]);


printf(“用戶名: %s<br>
“, mysql_result($result,3,”UserName”));
printf(“密碼: %s<br>
“, mysql_result($result,3,”UserPass”));


?>


3,插入某一條數據


<?php


$sql=”insert into ec_admin(UserName,UserPass) values(liugongxun2,jakemary2)”;
$result=mysql_query($sql,$GLOBALS[“conn”])or die(mysql_error());


?>


4,while循環


<?php


$sql=”select * from ec_admin”;
$result = mysql_query($sql,$GLOBALS[“conn”]);
while($myrow = mysql_fetch_row($result))
{
 printf(“用戶名%s %s密碼<br />”,$myrow[1],$myrow[2]);
}


?>


5,do while循環


<?php


$sql=”select * from ec_admin”;
$result = mysql_query($sql,$GLOBALS[“conn”]);
if($myrow = mysql_fetch_array($result))
{
 do
 {
 printf(“用戶名%s %s密碼<br />”,$myrow[“UserName”],$myrow[“UserPass”]);
 }while($myrow = mysql_fetch_array($result));
}
?>


6,判斷表單是否提交


<?php


if ($submit)


{}


?>

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