将mysql_query结果传递给foreach

Question

I used the following code to to get list of users facebook friends and ccheck it against users in an app database. This code would return the users of the app, who are Facebook friends of the user.

     $friends_set = '(';
             foreach($friends["data"] as $value) {
                 $friends_set .= $value['id'].','; 
             }
             $new_set = preg_replace('/,$/',')',$friends_set);
               $res = mysql_query("SELECT * from user AS u, upload AS up WHERE u.fb_id IN $new_set AND u.fb_id=up.user_id") or die(mysql_error());

    while($row = mysql_fetch_array($res)) {

        echo $row['fb_id']. "". $row['first_name'];
        echo "<br>"; 

      }

$data['top_friends']=$res;
$this->load->view('myview');

This code works. It is in a controller of my codeigniter application and it successfully echos the correct data onto the page.

However now I need to print the result of the query in a for each statement in my view like this:

<?php foreach ($top_friends as $me) : ?>

                    <div >

                    <p><?php echo $me['first_name']; ?></p>

                     <?php endforeach; ?>

However when I try getting the query results in the view using the for each it doesn't work.

How do i fix this?

Answer 1

You could try it the codeignitor way, Create a model function say get_top_friends and i assume that you are passing a comma separated string as argument like $fb_id = '45,65,78,89'. Say facebook_model is the name of the model then :

class Facebook_model extends CI_Model{
     //other functions and constrcutor here

    //function to get the top friends
     function get_top_friends($fb_id){
       $fbId = explode(",",$fb_id)
       $this->db->select('*');
       $this->db->where_in('fb_id',$fbId);
       $this->db->order_by('points','desc');
       $this->db->limit(10);
       $query = $this->db->get('user');
       if ($query->num_rows() < 1) return FALSE;
       return $query->result_array();
     }
}

And make change in your code as below:

 $friends_set = '';
     foreach($friends["data"] as $value) {
         $friends_set .= $value['id'].','; 
     }
     $new_set = preg_replace('/,$/',')',$friends_set);
     $res = $this->facebook_model->get_top_friends($new_set);
     $data['top_friends']=$res;
     $this->load->view('myview',$data);

And now in view you can try

foreach ($top_friends as $me){
  echo $me['first_name'];
}

[Updated for user ]

If you want to do it as in your question : then try,

$result = array();
while($row = mysql_fetch_array($res)) {
        $result[] = $row;  
}
$data['top_friends']=$result;
$this->load->view('myview',$data);//pass data to view