php - Get a specific user data from MySQL in Xcode -

my code working fine, getting information need, have write email user want information in php file. want information user write email in text field. how can that?

here php file:

<?php  $servername = "*****"; $username = "*****"; $password = "*****"; $dbname = "*****";  // create connection $conn = new mysqli($servername, $username, $password, $dbname); // check connection if ($conn->connect_error) {     die("connection failed: " . $conn->connect_error); }   //i want email information xcode text field        $sql = "select id, nome, email, cpf, senha usuario_log email = 'albino@peggou.com.br'";     $result = $conn->query($sql);      if ($result->num_rows > 0) {         // output data of each row         while($row = $result->fetch_assoc()) {             $resultado = array("status" => "0", "id" => $row["id"], "nome" => $row["nome"], "email" => $row["email"], "cpf" => $row["cpf"], "senha" => $row["senha"]);         }     } else {          echo "0 results";     }     echo json_encode($resultado);          $conn->close(); ?> 

here .m file, information displayed in log.

nsstring *urlstring = [nsstring stringwithformat: @"http://peggou.com.br/dados.php"];     nsurl *url = [nsurl urlwithstring:urlstring];     nsdata *data = [nsdata datawithcontentsofurl:url];     nsdictionary *json = [nsjsonserialization jsonobjectwithdata:data options:kniloptions error:nil];     nsstring *statususer = [json objectforkey:@"status"];     nsstring *iduser = [json objectforkey:@"id"];     nsstring *nomeuser = [json objectforkey:@"nome"];     nsstring *emailuser = [json objectforkey:@"email"];     nsstring *cpfuser = [json objectforkey:@"cpf"];     nsstring *senhauser = [json objectforkey:@"senha"];     nslog(@"\n status: %@,\n id: %@,\n nome: %@,\n e-mail: %@,\n cpf: %@,\n senha: %@ \n", statususer, iduser, nomeuser, emailuser, cpfuser, senhauser);