如何查询外键并获取相应的行

Question

我的PHP查询有问题。我只需要在列表视图中获取点击患者的处方。

这里是处方的表格结构。

我需要患者ID 79，以显示他的所有相应的处方。请帮帮我。

这里是PHP。

<?php 

/* 
* Following code will list all the products 
*/ 

// array for JSON response 
$response = array(); 


// include db connect class 
require_once __DIR__ . '/db_connect.php'; 

// connecting to db 
$db = new DB_CONNECT(); 

if (isset($_GET["uid"])) { 
    $uid = $_GET['uid']; 

// get all products from products table 

$result = mysql_query("select * from prescription") or die(mysql_error()); 

// check for empty result 
if (mysql_num_rows($result) > 0) { 
    // looping through all results 
    // products node 
    $response["prescription"] = array(); 

    while ($row = mysql_fetch_array($result)) { 
     // temp user array 
     $prescription = array(); 
     $prescription["pres_id"] = $row["pres_id"]; 
     $prescription["pres_name"] = $row["pres_name"]; 
     //$product["price"] = $row["price"]; 


     // push single product into final response array 
     array_push($response["prescription"], $prescription); 
    } 
    // success 
    $response["success"] = 1; 

    // echoing JSON response 
    echo json_encode($response); 
} else { 
    // no products found 
    $response["success"] = 0; 
    $response["message"] = "No prescriptions found"; 

    // echo no users JSON 
    echo json_encode($response); 
    } 
}else { 
    $response["success"] = 0; 
    $response["message"] = "Required field(s) is missing"; 

    // echoing JSON response 
    echo json_encode($response); 
} 
    } 
?> 

Answer 1

为了让所有的处方选定的患者，岂不是：中

mysql_query("select * from prescription where patient_user_fkey = '$patientID'")or die(mysql_error()); 

代替：

mysql_query("select * from prescription") or die(mysql_error());