1,php连接数据库 <?php $dbhost = "localhost";
$dbuser = "root"; //你的mysql用户名
$dbpass = "123456"; //你的mysql密码
$dbname = "data"; //你的mysql库名 //连接本地数据库
$GLOBALS["conn"] = mysql_connect($dbhost,$dbuser,$dbpass); //打开数据库
mysql_select_db($dbname,$GLOBALS["conn"]); ?> 2.php读取数据库中,某一字段值 <?php //读取一列数据
$sql="select * from ec_admin";
$result = mysql_query($sql,$GLOBALS["conn"]); printf("用户名: %s<br>", mysql_result($result,3,"UserName"));
printf("密码: %s<br>", mysql_result($result,3,"UserPass")); ?> 3,php插入某一条数据 <?php $sql="insert into ec_admin(UserName,UserPass) values("liugongxun2","jakemary2")";
$result=mysql_query($sql,$GLOBALS["conn"])or die(mysql_error()); ?> 4,php while循环 <?php $sql="select * from ec_admin";
$result = mysql_query($sql,$GLOBALS["conn"]);
while($myrow = mysql_fetch_row($result))
{
printf("用户名%s %s密码<br />",$myrow[1],$myrow[2]);
} ?> 5,php do while循环 <?php $sql="select * from ec_admin";
$result = mysql_query($sql,$GLOBALS["conn"]);
if($myrow = mysql_fetch_array($result))
{
do
{
printf("用户名%s %s密码<br />",$myrow["UserName"],$myrow["UserPass"]);
}while($myrow = mysql_fetch_array($result));
}
?> 6,php判断表单是否提交 <?php if ($submit) {} ?>
