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1,php連接數(shù)據(jù)庫(kù)

<?php

$dbhost = 'localhost';
$dbuser = 'root'; //你的mysql用戶名
$dbpass = '123456'; //你的mysql密碼
$dbname = 'data'; //你的mysql庫(kù)名

//連接本地?cái)?shù)據(jù)庫(kù)
$GLOBALS["conn"] = mysql_connect($dbhost,$dbuser,$dbpass);

//打開數(shù)據(jù)庫(kù)
mysql_select_db($dbname,$GLOBALS["conn"]);

?>

2.php讀取數(shù)據(jù)庫(kù)中,某一字段值

<?php

//讀取一列數(shù)據(jù)
$sql="select * from ec_admin";
$result = mysql_query($sql,$GLOBALS["conn"]);

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

?>

3,php插入某一條數(shù)據(jù)

<?php

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

?>

4,php while循環(huán)

<?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,php do while循環(huán)

<?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,php判斷表單是否提交

<?php

if ($submit)

{}

?>

PHP教程