检查字段已填充，否则显示错误[php]

Question

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• What does ? … : … do? [duplicate] 8 answers

in this i have to check if in fields data is fields then it submit otherwise it can display error with if statements

   <?php
include("config.php");
    $name=$_POST["name"];
    $email=$_POST["email"];
    $phone=$_POST["phone"];
    $budget=$_POST['budget'];
        $insert_query="insert into form(name,email,phone,budget) values ('$name','$email','$phone','$budget')";
        $con=mysql_query($insert_query);

   ?>

</div>

Answer 1

take a look at empty() function http://php.net/empty

if (empty($_POST["name"])) {
     die('name is empty');
}