将数据添加到数据库

When I try to add a user to the database with POST a new user is added but all fields are Null.
Any help guys ? Thank you in advance.This is my source code:

if($_SERVER['REQUEST_METHOD'] == "POST")                    
{
 // Get data

$name = isset($_POST['name']) ;

 $email = isset($_POST['email']);

 $password = isset($_POST['password']);

 $status = isset($_POST['status']);

 // Insert data into data base

 $sql = "INSERT INTO users (`name`, `email`, `password`, `status`) VALUES     ('$name', '$email', '$password', '$status')";

 $qur = mysql_query($sql);

if($qur){

$json = array("status" => 1, "msg" => "Done User added!");

}else{

 $json = array("status" => 0, "msg" => "Error adding user!");

 }

}else{

$json = array("status" => 0, "msg" => "Request method not accepted");

}


@mysql_close($conn);

/* Output header */

header('Content-type: application/json');

echo json_encode($json);

**

isset return only true or false so if you want to insert value you can check it with if condition replace your code with above it will be work fine

    if($_SERVER['REQUEST_METHOD'] == "POST"){
$name = (isset($_POST['name']))?$_POST['name']:'' ;
$email = (isset($_POST['email']))?$_POST['email']:'';
$password = (isset($_POST['password']))?$_POST['password']:'';
$status = (isset($_POST['status']))?$_POST['status']:'';
$sql = "INSERT INTO users (`name`, `email`, `password`, `status`) VALUES     ('$name', '$email', '$password', '$status')";
$qur = mysql_query($sql);
if($qur){
$json = array("status" => 1, "msg" => "Done User added!");
}else{
 $json = array("status" => 0, "msg" => "Error adding user!");
}
}else{
$json = array("status" => 0, "msg" => "Request method not accepted");
}
@mysql_close($conn);
header('Content-type: application/json');
echo json_encode($json);

save this form in html file and check it with this edited example

    <form method="post">
<input type="text" name="name" value="Red Symbol" />
<input type="text" name="email" value="red@symbol.com" />
<input type="text" name="password" value="chock" />
<input type="text" name="status" value="1" />
<input type="submit" name="submit" value="Submit" />
</form>

You are not checking if any of the fields are empty.

You need to do that, and only perform the query if they are not.

You can also restructure your code to avoid nested if/else:

function sendJson($data){

    header('Content-type: application/json');
    echo json_encode($data);
    //stop execution after sending response
    exit;
}
//if not POST request, exit
if($_SERVER['REQUEST_METHOD'] !== "POST") {
    sendJson(["status" => 0, "msg" => "Request method not accepted"]);
}

//default data
$defaults = [
    'name'      =>  false,
    'email'     =>  false,
    'password'  =>  false,
    'status'    =>  false,
];

$input = array_intersect_key(array_merge($defaults, $_POST), $defaults);

//if empty field, exit
if(in_array(false, $input)){
    sendJson(["status" => 0, "msg" => "All fields are required"]);
}

// Insert data into data base
//you REALLY REALLY need to use PDO/MYSQLI with prepared statements, this code is dangerous

$sql = "INSERT INTO users (`name`, `email`, `password`, `status`) VALUES     ('$input[name]', '$input[email]', '$input[password]', '$input[status]')";
$qur = mysql_query($sql);

//if query failed, exit
if(!$qur){
    sendJson(["status" => 0, "msg" => "Error adding user!"]);
}

//if we get here, all is OK
sendJson(["status" => 1, "msg" => "Done User added!"]);

@mysql_close($conn);