ช่วยหน่อยนะครับ แก้code json ajax ส่งข้อมูลแบบ primary key

<?php
    header("Content-type: text/html; charset=UTF-8");
    header('Cache-Control: no-cache');
    header('Pragma: no-cache');
    header('Expires: 0');
    include("connect_project.php");
    $where = "";
    $sql = "SELECT project_tbl.p_id AS p_id,p_name,COUNT(tc_id) AS tc_id FROM testcase_tbl 
    INNER JOIN project_tbl ON project_tbl.p_id = testcase_tbl.p_id GROUP BY project_tbl.p_id $where";
    $result = runSQL($sql);
    $numrow = countRec('p_id','project_tbl',$where);
    if($numrow>0){
        $json = "";
        $json .= "{";
        $json .= ""aaData":[";
        $rc = false;
        while ($row = mysql_fetch_array($result)) {
            if ($rc) $json .= ",";
            $json .= "[";
            //$json .= """.$row['p_name'].""";
            $json .= """."<a href=javascript:openWindow('?id=".$row['p_id']."')>".$row['p_name']."</a>".""";
            $json .= ","".number_format($row['tc_id']).""]";
            $rc = true;
        }
            $json .= "]";
            $json .= "}";
            echo $json;
    }
?>

<?php
    header("Content-type: text/html; charset=UTF-8");
    header('Cache-Control: no-cache');
    header('Pragma: no-cache');
    header('Expires: 0');
    include("connect_project.php");
        //รับ pk ที่มาจากหน้า display
    $id = $_GET['id'];
    $where = "INNER JOIN requirement_tbl ON requirement_tbl.req_id = testcase_tbl.req_id AND requirement_tbl.p_id = testcase_tbl.p_id WHERE testcase_tbl.p_id = $id";
    $sql = "SELECT requirement_tbl.req_id AS req_id,req_name,COUNT(tc_id) AS tc_id FROM testcase_tbl $where";
    $result = runSQL($sql);
    $numrow = countRec('requirement_tbl.req_id','testcase_tbl',$where);
    if($numrow>0){
        $json = "";
        $json .= "{";
        $json .= ""aaData":[";
        $rc = false;
        while ($row = mysql_fetch_array($result)) {
            if ($rc) $json .= ",";
            $json .= "[";
            $json .= """.$row['req_name']."</a>".""";
            $json .= ","".number_format($row['tc_id']).""]";
            $rc = true;
        }
            $json .= "]";
            $json .= "}";
            echo $json;
    }
?>