encode json using php?

Question

I want to get json with php encode function like the following

Answer 1

Here is a solution that i came with

 $i = 1; 
 $array = array(); 
 while($row = mysql_fetch_array($result)) 
 { 
 $array[] = json_encode(array('id'=>$i, 'name' => $row['name'])); 
 $i++; 
 } 
 echo implode(',', $array); // Take output array glue it with the  

This will put the json into an array and then implode it with glue (,) outputing the following {"results":[{"id":1,"name":"maadi"},{"id":2,"name":"monofiya"}]} without the need to do the array first then pass it to the json_encode() function