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Home Backend Development PHP Tutorial SESSION存多维数组问题

SESSION存多维数组问题

Jun 23, 2016 pm 01:28 PM

需求是把最近访问的分类ID(3个)存入到SESSION里 

然后通过循环去数据库里取对应的分类名称

我是先把得到的3个分类id拼成一个数组 存到session里 
然后再把它取出来 再压到那个数组里
现在问题是取出来的数据并不是我想要的一个二维数组 
这是我的代码:

session_start();$cate1 = $_GET['cate1'];$cate2 = $_GET['cate2'];$cate3 = $_GET['cate3'];$data[] = array('cate1'=>$cate1,'cate2'=>$cate2,'cate3'=>$cate3);if($_SESSION['cate']){	$data[] = $_SESSION['cate'];}$_SESSION['cate'] = $data;
Copy after login


这是第三次访问 返回的数据:
array(2) {  [0]=>  array(3) {    ["cate1"]=>    string(2) "35"    ["cate2"]=>    string(2) "43"    ["cate3"]=>    string(2) "12"  }  [1]=>  array(2) {    [0]=>    array(3) {      ["cate1"]=>      string(2) "35"      ["cate2"]=>      string(2) "43"      ["cate3"]=>      string(2) "12"    }    [1]=>    array(2) {      [0]=>      array(3) {        ["cate1"]=>        string(2) "95"        ["cate2"]=>        string(2) "64"        ["cate3"]=>        string(2) "13"      }      [1]=>      array(2) {        [0]=>        array(3) {          ["cate1"]=>          string(2) "95"          ["cate2"]=>          string(2) "64"          ["cate3"]=>          string(2) "13"        }        [1]=>        array(1) {          [0]=>          array(3) {            ["cate1"]=>            string(2) "55"            ["cate2"]=>            string(2) "24"            ["cate3"]=>            string(2) "43"          }        }      }    }  }}
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这个结果让我很伤心 如果才能得到一个正常的二维数组


回复讨论(解决方案)

session_start();$cate1 = $_GET['cate1'];$cate2 = $_GET['cate2'];$cate3 = $_GET['cate3'];$data = array('cate1'=>$cate1,'cate2'=>$cate2,'cate3'=>$cate3);if($_SESSION['cate']){    $data = $_SESSION['cate'];} $_SESSION['cate'] = $data;
Copy after login

这样也不行啊 版主大哥 这样取到的永远只有一个一维数组

http://localhost/test?cate1=23&cate2=34&cate3=45
http://localhost/test?cate1=24&cate2=35&cate3=46
我请求了两次它返回的都是这个数据

array(3) {  ["cate1"]=>  string(2) "23"  ["cate2"]=>  string(2) "34"  ["cate3"]=>  string(2) "45"}
Copy after login


我希望是这样的
array(3) {[0]=>{    ["cate1"]=>  string(2) "23"  ["cate2"]=>  string(2) "34"  ["cate3"]=>  string(2) "45"}[1]=>{    ["cate1"]=>  string(2) "24"  ["cate2"]=>  string(2) "35"  ["cate3"]=>  string(2) "46"}}
Copy after login


谢谢回复 麻烦再看下

session_start();if(! isset($_SESSION['cate']) ) $_SESSION['cate'] = array();$cate1 = $_GET['cate1'];$cate2 = $_GET['cate2'];$cate3 = $_GET['cate3'];$_SESSION['cate'][] = array('cate1'=>$cate1,'cate2'=>$cate2,'cate3'=>$cate3);
Copy after login

靠 原来这么简单 ……。 想太复杂了 谢谢版主

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