Question

php购物车 如何做到商品已在购物车内的效果

<?php

session_start();

//接收session加入购物车

if(!isset($_SESSION['car'])){
$goos['id']=$_POST['id'];
$goos['numberitem']=$_POST['numberitem'];
$goos['size']=$_POST['size'];
$goos['color']=$_POST['color'];
$goos['money']=$_POST['money'];
$_SESSION['car'][]=$goos;
}
$a=$_POST['id'];
for($i=0; $i<count($_POST['id']); $i++){
if(in_array($a,$_SESSION['car'][$i])){
echo "购买过";
}else{
$goos['id']=$_POST['id'];
$goos['numberitem']=$_POST['numberitem'];
$goos['size']=$_POST['size'];
$goos['color']=$_POST['color'];
$goos['money']=$_POST['money'];
$_SESSION['car'][]=$goos;
}}

print_r($_SESSION);

?>
一直无法有已经购买过的效果 请问那边错误了呢?

Answer 1

in_array($a,$_SESSION['car'][$i]);你确定这个能搜索得到吗? 既然你都遍历了为什么直接是$a==$_SESSION['car'][$i]['id']