php - Run synchronous mysqli query from function -


i'm tryng code work(probably it's impossible,but sure ask):

$query = "select `id`,`department_name`,`operator_id`,`title`,`priority`,`created_time`,`ticket_status`  ".$supportticketstable." `user_id`=".$_session['id'] ;     $prepared = $stmt->prepare($query);     if($prepared){         if($stmt->execute()){             $stmt->store_result();             $result = $stmt->bind_result($id, $dname, $opid, $title, $priority, $dat, $status);             $departments=array('response'=>'ret','tickets'=>array());             $departments['tickets']['user']=array();             if($stmt->num_rows>0){                 while (mysqli_stmt_fetch($stmt)) {                     switch ($status) {                         case 0:                             $stat='closed';                             break;                         case 1:                             $stat='open';                             break;                         case 2:                             $stat='under assignment';                             break;                     }                     switch ($priority) {                         case 0:                             $stat='low';                             break;                         case 1:                             $stat='medium';                             break;                         case 2:                             $stat='high';                             break;                         case 3:                             $stat='urgent';                             break;                     }                     if(isset($_session['operators'][$opid]))                         $opname=$_session['operators'][$opid];                     else{                         retrive_operators();                         $opname=$_session['operators'][$opid];                     }                     $departments['tickets']['user'][]=array('id'=>$id,'dname'=>$dname,'opname'=>$opname,'title'=>$title,'priority'=>$priority,'date'=>$dat,'status'=>$status,"action"=>'<div class="btn-group"><button class="btn btn-info editdep" value="'.$id.'"><i class="icon-edit"></i></button><button class="btn btn-danger remdep" value="'.$id.'"><i class="icon-remove"></i></button></div>');                 }             }         }         else             echo json_encode(array(0=>mysqli_stmt_error($stmt)));     }     else         echo json_encode(array(0=>mysqli_stmt_error($stmt)));

and

function retrive_operators(){ if(isset($_session['name'])){     $mysqli = new mysqli($hostname, $username, $password, $databasename);     $stmt = $mysqli->stmt_init();     if($stmt){         $query = "select `id`,`name`  ".$supportusertable." status='1' or status='2'" ;         $prepared = $stmt->prepare($query);         if($prepared){             if($stmt->execute()){                 $stmt->store_result();                 $result = $stmt->bind_result($id, $name);                 if($stmt->num_rows>0){                     $_session['operators']=array();                     while (mysqli_stmt_fetch($stmt)) {                         $_session['operators'][$id]=$name;                     }                 }             }         }     } } }

is there way run them in way? @ moment says $hostname, $username, $password, $databasename aren't defined (but are, beacuse first mysqli function run),it's can't read var have setted @ beginning of file, before every condition or function, after session_start().
these errors(the line correspond reported code):

[14-may-2013 20:34:35 utc] php notice:  undefined variable: hostname in c:\xampp\htdocs\php\function.php on line 983  [14-may-2013 20:34:35 utc] php notice:  undefined variable: username in c:\xampp\htdocs\php\function.php on line 983  [14-may-2013 20:34:35 utc] php notice:  undefined variable: password in c:\xampp\htdocs\php\function.php on line 983  [14-may-2013 20:34:35 utc] php notice:  undefined variable: databasename in c:\xampp\htdocs\php\function.php on line 983  [14-may-2013 20:34:36 utc] php notice:  undefined variable: supportusertable in c:\xampp\htdocs\php\function.php on line 986  [14-may-2013 20:34:36 utc] php notice:  undefined index: operators in c:\xampp\htdocs\php\function.php on line 823


thanks

you have immediate problem scope of variables. read variable scope , try 

function retrive_operators(){     global $hostname, $username, $password, $databasename;     ...

or pass them parameters

function retrive_operators($hostname, $username, $password, $databasename){ ....

and call function

retrive_operators($hostname, $username, $password, $databasename);

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