PHP购物车

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<?php session_start();
 $conn=mysql_connect("localhost","root","admin");
 mysql_select_db("songyu");
 //检查数组元素出现次数
 function check_count($array,$element)
 {
 	$times=0;
 	for($i=0;$i

<?php session_start();
 $conn=mysql_connect("localhost","root","admin");
 mysql_select_db("songyu");
 $sql="select * from user where username='".$_POST["username"]."' and password='".$_POST["password"]."'";
 $result=mysql_query($sql);
 $out=mysql_fetch_array($result);
 if(!$out)
 {
 	echo "wrong!";
 }
 else
 {
 	$_SESSION["user"]=$out[id];
 	echo "