I have this code and I want made 10 curl connections like this with multi but I don't know how to that with this specific code:

What the code does?

1. Make a curl requiest to an .asp page

2. Uses the result to send some data in a form ($ciudad) then the page get this submit and make an internal request and show an result.

3. Output the final result of that.

   function curl($header,$encoded,$cookie){
     $options = array(
       CURLOPT_USERAGENT       => $_SERVER['HTTP_USER_AGENT'],
       CURLOPT_TIMEOUT         => 120,    
       //CURLOPT_REFERER           => '',
       //CURLOPT_HTTPHEADER        => $header,
       CURLOPT_COOKIE          =>  $cookie,
       CURLOPT_POST            => true,
       CURLOPT_POSTFIELDS      => $encoded,
       CURLOPT_RETURNTRANSFER  => true,     
       CURLOPT_HEADER          => false,    
       CURLOPT_FOLLOWLOCATION  => true,     
     );
     $ch = curl_init("http://procesos.ramajudicial.gov.co/consultaprocesos/consultap.aspx"); 
     curl_setopt_array( $ch, $options );
     $output = curl_exec($ch); 
     curl_close($ch);
     return $output;
   }
   
   $cookie = "";
   foreach($_COOKIE as $k => $v)
     $cookie .= $k."=".$v.";";
     $cookie = substr($cookie,0,strlen($cookie)-1);
   
     $encoded = '';
     foreach($_POST as $name => $value) {
       $encoded .= urlencode($name).'='.urlencode($value).'&';
     }
   
     $lk = "http://procesos.ramajudicial.gov.co/consultaprocesos/";
   
     $header[] = 'User-Agent: '.$_SERVER['HTTP_USER_AGENT'];
     $header[] = 'Accept: text/xml,application/xml,application/xhtml+xml,text /html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5';
     $header[] = 'Accept-Language: en-us,en;q=0.5'; 
     $header[] = 'Accept-Encoding: gzip,deflate'; 
     $header[] = 'Connection: keep-alive';
     $header[] = 'Cookie : '.$cookie;
     $header[] = 'Content-Type: application/x-www-form-urlencoded';
   
     $output = curl($header,$encoded,$cookie);
   
     $CIUDAD = urlencode("Medellin"); // to change
     $CORPORACION = urlencode("JUZGADOS CIVILES MUNICIPALES DE MEDELLIN"); // to change
     $DIGITOS = $numsus; 
   
     // BEGIN STEP 1
     $__VIEWSTATE = 'id="__VIEWSTATE" value="';
     $i = stripos($output,$__VIEWSTATE) + strlen($__VIEWSTATE);
     $j = stripos($output,'"',$i);
     $__VIEWSTATE = substr($output,$i,$j-$i);
   
     $__EVENTVALIDATION = 'id="__EVENTVALIDATION" value="';
     $i = stripos($output,$__EVENTVALIDATION) + strlen($__EVENTVALIDATION);
     $j = stripos($output,'"',$i);
     $__EVENTVALIDATION = substr($output,$i,$j-$i);
   
     $encoded = '__EVENTTARGET=DropDownList1&__EVENTARGUMENT=&__LASTFOCUS=&__VIEWSTATE='.urlencode($__VIEWSTATE).'&__EVENTVALIDATION='.urlencode($__EVENTVALIDATION).'&DropDownList1='.$CIUDAD.'&TextBox13=';
   
     $output = curl($header,$encoded,$cookie);