gistfile1.txt

<?php
    $pdo=new PDO("mysql:dbname=markers;host=127.0.0.1","root","");
   $stmt = $pdo->query("SELECT * FROM markers");
   $results = $stmt->fetchAll(PDO::FETCH_ASSOC);
   echo json_encode($results);
?>
<script id="source" language="javascript" type="text/javascript">
$(function(){
  $.ajax({                                      
    url: 'test.php',                       
    data: "",                                                      
    dataType: 'json',                
    success: function(data)          
    {
	  //alert(data[2].desc);
      console.log(data[2].desc);
    } 
   });   
});
</script>