Getting Data from MYSQL DB - php

Question

I'm facing problems when trying to get data from a MySQL Database in an Android application
The output is:
06-29 11:40:42.123: E/JSON(1426): {"tag":"getroute","success":1,"error":0,"products":[]}
I think the problem I’m facing is in my PHP file (this is the code of the tag):
if( . . . )
{
. . .
}
else if ($tag == 'getroute')
{
$endloc = $_POST['end'];
$op = $db->getRoutes($endloc);
if ($op)
{
$response["products"] = array();
while($data= mysql_fetch_assoc($op))
{
$product = array();
$product ["uname"] = $data["uname"];
$product ["start"] = $data["start"];
$product ["end"] = $data["end"];
$product ["meet1"] = $data["meet1"];
$product ["meet1time"] = $data["meet1time"];
$product ["meet2"] = $data["meet2"];
$product ["meet2time"] = $data["meet2time"];
$product ["meet3"] = $data["meet3"];
$product ["meet3time"] = $data["meet3time"];
$product ["ismoke"] = $data["ismoke"];
$product ["iwomen"] = $data["iwomen"];
$product ["ctime"] = $data["ctime"];
$product ["seats"] = $data["seats"];
// push single product into final response array
array_push($response["products"], $product);
}
$response["success"] = 1;
echo json_encode($response);
// user stored successfully
}
else
{
// user failed to store
$response["error"] = 1;
$response["error_msg"] = "Error occured in Making Route";
echo json_encode($response);
}
}
I don’t know where the problem is. I searched over the internet and I found some tutorials but they always give me this error.
Function getroute :
public function getRoutes($endlocation)
{
$result = mysql_query("SELECT * FROM routes WHERE end = '$endlocation'");
return $result;
}

Answer 1

Try checking the number of results with mysql_num_rows() before you begin your while.
Additionally, immediately after your while, try using print_r($data) to verify that there is stuff in your record.
It seems to me that you're just having issues with your data source.