在使用$ _POST单击检查按钮后，使用$ _POST方法以前设置的数组变量将丢失

Question

please forgive my confusing title, here is my problem:

1. set an array variable through $_POST
2. check which button has been clicked and process the $_POST variable

What is in my code:

<?php
...
$user = array_filter(array_map('array_filter', $_POST['user']));
...

$submit = isset($_POST['button']) ? trim($_POST['button']) : '';
   if ($submit == 'Confirm') {

        ...do something with $user;

   } else if ($submit == 'Cancel') {

        ...do something else with $user;

   }
?>

It appears that when the page is first loaded, $user has been set correctly, however, once the "Confirm" button is clicked, the $name array is lost and cannot be processed. Any idea of how to resolve this will be much appreciated! Many thanks.

Answer 1

an Idea, you need to store it in session. it seems you get $_POST['user'] from previous page/request. variable $_POST only used for passing variable between page, It will not exist anymore if you reload the page.

do it like:

$user = $_SESSION['user'] = array_filter(array_map('array_filter', $_POST['user']));