jQuery Grid Plugin - jqGrid

I cant get the results... Is there any problem with my json php file?

<?php
include("ayar.php");
// coment the above lines if php 5
include("JSON.php");
$json = new Services_JSON();
// end comment
$examp = $_REQUEST["q"]; //query number
 
$page = $_REQUEST['page']; // get the requested page
$limit = $_REQUEST['rows']; // get how many rows we want to have into the grid
$sidx = $_REQUEST['sidx']; // get index row - i.e. user click to sort
$sord = $_REQUEST['sord']; // get the direction
if(!$sidx) $sidx =1;
 
// search options
// IMPORTANT NOTE!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// this type of constructing is not recommendet
// it is only for demonstration
//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
$wh = "";
$searchOn = Strip($_REQUEST['_search']);
if($searchOn=='true') {
    $fld = Strip($_REQUEST['searchField']);
    if( $fld=='id' || $fld =='tarih' || $fld=='havuz' || $fld=='giren' || $fld=='cikan' || $fld=='ortalama' || $fld=='aciklama' ) {
        $fldata = Strip($_REQUEST['searchString']);
        $foper = Strip($_REQUEST['searchOper']);
        // costruct where
        $wh .= " AND ".$fld;
        switch ($foper) {
            case "bw":
                $fldata .= "%";
                $wh .= " LIKE '".$fldata."'";
                break;
            case "eq":
                if(is_numeric($fldata)) {
                    $wh .= " = ".$fldata;
                } else {
                    $wh .= " = '".$fldata."'";
                }
                break;
            case "ne":
                if(is_numeric($fldata)) {
                    $wh .= " <> ".$fldata;
                } else {
                    $wh .= " <> '".$fldata."'";
                }
                break;
            case "lt":
                if(is_numeric($fldata)) {
                    $wh .= " < ".$fldata;
                } else {
                    $wh .= " < '".$fldata."'";
                }
                break;
            case "le":
                if(is_numeric($fldata)) {
                    $wh .= " <= ".$fldata;
                } else {
                    $wh .= " <= '".$fldata."'";
                }
                break;
            case "gt":
                if(is_numeric($fldata)) {
                    $wh .= " > ".$fldata;
                } else {
                    $wh .= " > '".$fldata."'";
                }
                break;
            case "ge":
                if(is_numeric($fldata)) {
                    $wh .= " >= ".$fldata;
                } else {
                    $wh .= " >= '".$fldata."'";
                }
                break;
            case "ew":
                $wh .= " LIKE '%".$fldata."'";
                break;
            case "ew":
                $wh .= " LIKE '%".$fldata."%'";
                break;
            default :
                $wh = "";
        }
    }
}
//echo $fld." : ".$wh;
// connect to the database
$db = mysql_connect($dbhost, $dbuser, $dbpassword)
or die("Connection Error: " . mysql_error());
 
mysql_select_db($database) or die("Error conecting to db.");
 
switch ($examp) {
    case 1:
        $result = mysql_query("SELECT COUNT(*) AS count, SUM(giren) AS giren, SUM(cikan) AS cikan, SUM(ortalama) AS ortalama FROM balik_hareket".$wh);
        $row = mysql_fetch_array($result,MYSQL_ASSOC);
        $count = $row['count'];
        if( $count >0 ) {
            $total_pages = ceil($count/$limit);
        } else {
            $total_pages = 0;
        }
        if ($page > $total_pages) $page=$total_pages;
        $start = $limit*$page - $limit; // do not put $limit*($page - 1)
        if ($start<0) $start = 0;
        $SQL = "SELECT * FROM balik_hareket".$wh." ORDER BY ".$sidx." ". $sord." LIMIT ".$start." , ".$limit;
        $result = mysql_query( $SQL ) or die("Couldnt execute query.".mysql_error());
        $responce->page = $page;
        $responce->total = $total_pages;
        $responce->records = $count;
$i=0;
while($row = mysql_fetch_array($result,MYSQL_ASSOC)) {
    $responce->rows[$i]['id']=$row[id];
    $responce->rows[$i]['cell']=array($row[id],$row[havuz],$row[tarih],$row[giren],$row[cikan],$row[ortalama],$row[aciklama]);
    $i++;
}        
echo json_encode($responce);
     
        break;
    case 2:
        $result = mysql_query("SELECT COUNT(*) AS count FROM balik_hareket".$wh);
        $row = mysql_fetch_array($result,MYSQL_ASSOC);
        $count = $row['count'];
 
        if( $count >0 ) {
            $total_pages = ceil($count/$limit);
        } else {
            $total_pages = 0;
        }
        if ($page > $total_pages) $page=$total_pages;
        $start = $limit*$page - $limit; // do not put $limit*($page - 1)
        if ($start<0) $start = 0;
        $SQL = "SELECT * FROM balik_hareket".$wh." ORDER BY ".$sidx." ".$sord. " LIMIT ".$start." , ".$limit;
        $result = mysql_query( $SQL ) or die("Could not execute query.".mysql_error());
        $responce->page = $page;
        $responce->total = $total_pages;
        $responce->records = $count;
        $i=0;
        while($row = mysql_fetch_array($result,MYSQL_ASSOC)) {
            $responce->rows[$i]['id']=$row[id];
            $responce->rows[$i]['cell']=array($row[id],$row[tarih],$row[havuz],$row[giren],$row[cikan],$row[ortalama],$row[aciklama]);
            $i++;
        } 
        //echo $json->encode($responce); // coment if php 5
        echo json_encode($responce);
           
        break;
    case 3:
        $result = mysql_query("SELECT COUNT(*) AS count FROM balik_hareket".$wh);
        $row = mysql_fetch_array($result,MYSQL_ASSOC);
        $count = $row['count'];
 
        if( $count >0 ) {
            $total_pages = ceil($count/$limit);
        } else {
            $total_pages = 0;
        }
        if ($page > $total_pages) $page=$total_pages;
        $start = $limit*$page - $limit; // do not put $limit*($page - 1)
        if ($start<0) $start = 0;
        $SQL = "SELECT * FROM balik_hareket".$wh." ORDER BY ".$sidx." ".$sord. " LIMIT ".$start." , ".$limit;
        $result = mysql_query( $SQL ) or die("Couldnt execute query.".mysql_error());
        $responce->page = $page;
        $responce->total = $total_pages;
        $responce->records = $count;
        $i=0;
        while($row = mysql_fetch_array($result,MYSQL_ASSOC)) {
            $responce->rows[$i]['id']=$row[id];
            $responce->rows[$i]['cell']=array("",$row[id],$row[tarih],$row[havuz],$row[giren],$row[cikan],$row[ortalama],$row[aciklama]);
            $i++;
        } 
        echo $json->encode($responce); // coment if php 5
        //echo json_encode($responce);
           
        break;
    case 4:
        $result = mysql_query("SELECT COUNT(*) AS count FROM balik_hareket".$wh);
        $row = mysql_fetch_array($result,MYSQL_ASSOC);
        $count = $row['count'];
        if( $count >0 ) {
            $total_pages = ceil($count/$limit);
        } else {
            $total_pages = 0;
        }
        if ($page > $total_pages) $page=$total_pages;
        $start = $limit*$page - $limit; // do not put $limit*($page - 1)
        if ($start<0) $start = 0;
        $SQL = "SELECT * FROM balik_hareket".$wh." ORDER BY ".$sidx." ".$sord. " LIMIT ".$start." , ".$limit;
        $result = mysql_query( $SQL ) or die("Couldnt execute query.".mysql_error());
        $responce->page = $page;
        $responce->total = $total_pages;
        $responce->records = $count;
        $i=0;
        while($row = mysql_fetch_array($result,MYSQL_ASSOC)) {
            $responce->rows[$i]=$row;
            $i++;
        } 
        //echo $json->encode($responce); // coment if php 5
           echo json_encode($responce);
           
        break;
    case 5:
        $result = mysql_query("SELECT COUNT(*) AS count FROM balik_hareket".$wh);
        $row = mysql_fetch_array($result,MYSQL_ASSOC);
        $count = $row['count'];
 
        if( $count >0 ) {
            $total_pages = ceil($count/$limit);
        } else {
            $total_pages = 0;
        }
        if ($page > $total_pages) $page=$total_pages;
        $start = $limit*$page - $limit; // do not put $limit*($page - 1)
        if ($start<0) $start = 0;
        $SQL = "SELECT * FROM balik_hareket".$wh." ORDER BY ".$sidx." ".$sord. " LIMIT ".$start." , ".$limit;
        $result = mysql_query( $SQL ) or die("Couldt execute query.".mysql_error());
        $responce->page = $page;
        $responce->total = $total_pages;
        $responce->records = $count;
        $i=0;
        while($row = mysql_fetch_array($result,MYSQL_ASSOC)) {
            $responce->rows[$i]=$responce->rows[$i]['cell']=array($row[id],$row[tarih],$row[havuz],$row[giren],$row[cikan],$row[ortalama],$row[aciklama]);
            $i++;
        } 
        //echo $json->encode($responce); // coment if php 5
        echo json_encode($responce);
           
        break;
 
}
mysql_close($db);
 
function Strip($value)
{
    if(get_magic_quotes_gpc() != 0)
      {
        if(is_array($value))  
            if ( array_is_associative($value) )
            {
                foreach( $value as $k=>$v)
                    $tmp_val[$k] = stripslashes($v);
                $value = $tmp_val; 
            }                 
            else  
                for($j = 0; $j < sizeof($value); $j++)
                    $value[$j] = stripslashes($value[$j]);
        else
            $value = stripslashes($value);
    }
    return $value;
}
function array_is_associative ($array)
{
    if ( is_array($array) && ! empty($array) )
    {
        for ( $iterator = count($array) - 1; $iterator; $iterator-- )
        {
            if ( ! array_key_exists($iterator, $array) ) { return true; }
        }
        return ! array_key_exists(0, $array);
    }
    return false;
}
 
 
?>