PHP反序列化函數從0-9獲取任意數字

Question

我需要使用unserialize php函數獲取產品ID。我有這樣的文字

a:1:{i:4;a:17:{s:8:"quantity";i:1;s:10:"product_id";i:5196;s:11:"category_id";s:3:"209";s:5:"price";d:1;s:3:"tax";s:5:"18.00";s:6:"tax_id";s:1:"1";s:11:"description";s:0:"";s:12:"product_name";s:4:"test";s:11:"thumb_image";s:0:"";s:3:"ean";s:0:"";s:10:"attributes";s:6:"a:0:{}";s:16:"attributes_value";a:0:{}s:6:"weight";s:6:"0.0000";s:9:"vendor_id";s:1:"0";s:5:"files";s:6:"a:0:{}";s:14:"freeattributes";s:6:"a:0:{}";s:25:"dependent_attr_serrialize";s:6:"a:0:{}";}} 

，我得到這個PHP代碼的product_id：

$rslt = unserialize($data); 
echo $rslt[4]["product_id"]); 

所以我的問題是有沒有辦法做這樣的事情echo $rslt[x]["product_id"];其中x是0-9

之間的任何數字

也試過，但一旦你反序列化不起作用

 $i=0; 
     while($rslt[$i]["product_id"]!="") 
      { 
      echo $i; 
      //echo $rslt[4]["product_id"];      
      echo $rslt[$i]["product_id"]; 
      $i++; 
      } 

Answer 1

您輸入你有一個很好的舊PHP數組，相當於：

$rslt = array (
    4 => 
    array (
    'quantity' => 1, 
    'product_id' => 5196, 
    'category_id' => '209', 
    'price' => 1, 
    'tax' => '18.00', 
    'tax_id' => '1', 
    'description' => '', 
    'product_name' => 'test', 
    'thumb_image' => '', 
    'ean' => '', 
    'attributes' => 'a:0:{}', 
    'attributes_value' => 
    array (
    ), 
    'weight' => '0.0000', 
    'vendor_id' => '0', 
    'files' => 'a:0:{}', 
    'freeattributes' => 'a:0:{}', 
    'dependent_attr_serrialize' => 'a:0:{}', 
), 
); 

搶到的第一個元素，只需撥打current()與任何其他數組：

$first_item = current($rslt); 
print_r($first_item['product_id']);