如何在php 5.5中的页面之间传递数据

Question

i have next code and have Notice: Undefined index: name when open form page or empty fields so how i solve it and i'm use php5.5

<?php
if (isset($_SERVER['REQUEST_METHOD'])  == 'POST'){
  $name = $_POST["name"];
  $mail = $_POST["mail"];
  $massage = $_POST["massage"];

  echo "$name";
  echo "$mail";
  echo "$massage";
}

Answer 1

iseet() checks if a variable is set. Not if it has a specific value.

if ($_SERVER['REQUEST_METHOD']  == 'POST'){

Answer 2

<?php if (isset($_SERVER['REQUEST_METHOD'])  && ($_SERVER['REQUEST_METHOD'] == 'POST')){

Answer 3

As already mentioned by @John Conde, but if you really wish to use isset() you could so in a way like:

if (isset($_SERVER['REQUEST_METHOD'])  && ($_SERVER['REQUEST_METHOD'] == 'POST')){ //

or another way to do so:

Give your <form> a hidden type:

<form method = "POST" action = "">
<input type = "hidden" name = "check">
<input type = "submit" value = "Submit">
</form>

and then use it like:

if(isset($_POST['check'])) { //