php - Codeigniter - Parse each row of json data -

hi using foreach loop parse each row of json data..

what exactly trying json data view , sending controller parsing each row of json insert database.. trying insert data putting in loop , calling setcurrentattendance($item) present in model. if approach wrong please let me know correct one..

the php code :

$data = json_decode($_post["json"]);           var_dump($data);          foreach($data $item){             $this->codegen_model->setcurrentattendance($item);         } 

note

$this->codegen_model->setcurrentattendance($item);  

redirects model trying pass $item array , inserting database..

function setcurrentattendance($data){         $this->db->insert('table_name', $data);          if ($this->db->affected_rows() >= '1')         {             return true;         }          return false;     } 

the json data variable $data :

  "[{"roll_no":"1101","full_name":"john smith","dayspresent":"1","totalclasses":"2","percent_att":"50","hasattended":"p","att_date":"thu apr 04 2013","st_class":"1","st_section":"a"}, {"roll_no":"1102","full_name":"ram puri","dayspresent":"4","totalclasses":"4","percent_att":"100","hasattended":"p","att_date":"thu apr 04 2013 ","st_class":"1","st_section":"a"}]" 

but getting following error , not able guess why ??

<div style="border:1px solid #990000;padding-left:20px;margin:0 0 10px 0;">  <h4>a php error encountered</h4>  <p>severity: warning</p> <p>message:  invalid argument supplied foreach()</p> <p>filename: controllers/controller_name.php</p> <p>line number: 245</p>  </div> 

please let me know wrong.

thanks in advance.

update

json encoded data:

"[{\"roll_no\":\"1101\",\"full_name\":\"john smith\",\"dayspresent\":\"1\",\"totalclasses\":\"2\",\"percent_att\":\"\n\t\t\t50\t\t\t\",\"hasattended\":\"p\",\"att_date\":\"fri apr 05 2013 \",\"st_class\":\"1\",\"st_section\":\"a\"},{\"roll_no\":\"1102\",\"full_name\":\"ram puri\",\"dayspresent\":\"4\",\"totalclasses\":\"4\",\"percent_att\":\"\n\t\t\t100\t\t\t\",\"hasattended\":\"a\",\"att_date\":\"fri apr 05 2013 \",\"st_class\":\"1\",\"st_section\":\"a\"}]" 

your json string invalid. has \t , \n in it, shouldn't. have filter out first:

$json = str_replace(array("\t","\n"), "", $_post["json"]); $data = json_decode($json);   var_dump($data);  foreach($data $item) {   $this->codegen_model->setcurrentattendance($item); } 

see: this works.