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hyhproject/home/view/default/shops/shopcats/php/get.php

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+<?php
+    function gmt_iso8601($time) {
+        $dtStr = date("c", $time);
+        $mydatetime = new DateTime($dtStr);
+        $expiration = $mydatetime->format(DateTime::ISO8601);
+        $pos = strpos($expiration, '+');
+        $expiration = substr($expiration, 0, $pos);
+        return $expiration."Z";
+    }
+
+    $id= 'LTAIOUxnwu01rA9g';
+    $key= 'k0eigaxy8Gnz2V6AwcMNmwMSbQXsCf';
+    $host = 'http://dianshanglian.oss-cn-beijing.aliyuncs.com';
+
+    $now = time();
+    $expire = 30; //设置该policy超时时间是10s. 即这个policy过了这个有效时间，将不能访问
+    $end = $now + $expire;
+    $expiration = gmt_iso8601($end);
+    $save_dir = $_GET['dir'];
+    $dir = 'upload/'.$save_dir."/".date('Y-m').'/';
+
+    //最大文件大小.用户可以自己设置
+    $condition = array(0=>'content-length-range', 1=>0, 2=>1048576000);
+    $conditions[] = $condition; 
+
+    //表示用户上传的数据,必须是以$dir开始, 不然上传会失败,这一步不是必须项,只是为了安全起见,防止用户通过policy上传到别人的目录
+    $start = array(0=>'starts-with', 1=>'$key', 2=>$dir);
+    $conditions[] = $start; 
+
+
+    $arr = array('expiration'=>$expiration,'conditions'=>$conditions);
+    //echo json_encode($arr);
+    //return;
+    $policy = json_encode($arr);
+    $base64_policy = base64_encode($policy);
+    $string_to_sign = $base64_policy;
+    $signature = base64_encode(hash_hmac('sha1', $string_to_sign, $key, true));
+
+    $response = array();
+    $response['accessid'] = $id;
+    $response['host'] = $host;
+    $response['policy'] = $base64_policy;
+    $response['signature'] = $signature;
+    $response['expire'] = $end;
+    //这个参数是设置用户上传指定的前缀
+    $response['dir'] = $dir;
+    echo json_encode($response);
+?>