android - How to create a SQL query in PHP with differents variables -


i have problem when create sql query depends on many variables user select in different checkboxes. make httprequest , them, when proposed create query, check variable , create query, gradually. show php code:

$link =  mysql_connect($hostname, $username, $password) or die('no se pudo conectar: '  . mysql_error()); //echo 'conectado satisfactoriamente'; mysql_select_db('agenda juvenil') or die('no se pudo seleccionar la base de datos'); mysql_query('set character set utf8');  $query="select id, title, barrio_smultiple, coordenadas_p_0_coordinate,     coordenadas_p_1_coordinate, gratuita_b eventosdiarios where";  // check post data  if (isset($_get['franjas0'])){  $franja0 = $_get['franjas0'];  $query.="franja_smultiple in ('$franja0'";  }  if (isset($_get['franjas1'])){  $franja1 = $_get['franjas1'];  $query.=",'$franja1'";  }  if (isset($_get['franjas2'])){  $franja2 = $_get['franjas2'];  $query.=",'$franja2'";  }  $query.=")";  // product products table $result = mysql_query($query) or die('consulta fallida: ' . mysql_error());  if (mysql_num_rows($result) > 0) { // looping through results // products node $response["eventos"] = array();  while ($row = mysql_fetch_array($result)) {     // temp user array     $evento = array();     $evento["id"] = $row["id"];     $evento["title"] = $row["title"];     $evento["barrio_smultiple"] = $row["barrio_smultiple"];      $evento["coordenadas_p_0_coordinate"] = $row["coordenadas_p_0_coordinate"];     $evento["coordenadas_p_1_coordinate"] = $row["coordenadas_p_1_coordinate"];     $evento["gratuita_b"] = $row["gratuita_b"];       // push single product final response array     array_push($response["eventos"], $evento); } // success $response["success"] = 1;  // echoing json response echo json_encode($response);  } else { // no products found $response["success"] = 0; $response["message"] = "no se han encontrado eventos";  // echo no users json echo json_encode($response); }

the query must return something, have nothing. variables sent throught

list<namevaluepair> params = new arraylist<namevaluepair>();

i using android. can me please??

thanks in advance.

regards.

your code needs have space after where. needs say

...b eventosdiarios ";

rather than

....b eventosdiarios where";

or you'll illformed query.


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