Php - How to make an Array to this code

Question

Hi

I want to make a validation to my files. Example my files are header.php, footer.php, sidebar.php, info.php etc. So if some of these files missed error will shown.

$required = 'header.php';
if (!file_exists($required)) {
  die('Please upload files properly');
}

How to validate the all of files in simple code?

Answer 1

$files = array("header.php", "footer.php", "sidebar.php");
foreach($files as $required){
  if (!file_exists($required)) {
    die('Please upload files properly');
  }
}

Answer 2

Using the code you already have, you could use PHP's (excellent) foreach statement:

$required = array("header.php", "footer.php", "sidebar.php", "info.php");
foreach($required as $req) {
    if(file_exists($req)) continue;
    die("Please upload files properly.");
}

That being said, this sounds like a case for the require and require_once keywords:

require "header.php";        /* Will puke if header.php is missing. */

Answer 3

Just use a foreach to iterate the array:

$required = array('header.php', 'footer.php', 'sidebar.php', 'info.php');
foreach ($required as $required) {
    if (!file_exists($required)) {
        die('Please upload files properly');
    }
}

---

Edit    It’s not a mistake that I used the same variable for the array items as for the array itself. foreach uses an internal copy of the array and not the array itself:

Note: Unless the array is referenced, foreach operates on a copy of the specified array and not the array itself. foreach has some side effects on the array pointer. Don't rely on the array pointer during or after the foreach without resetting it.

Although the original array in $required overwritten with the first iteration, the internal one stays as initially passed to foreach. This might not be best practice since it’s a little confusing when not known. But it’s absolutely valid.

Answer 4

Does validation of your own application really makes sense? Anyway, if you really want to do this:

1. Construct an array of all files.
2. Use foreach to iterate over all the file in the array.
3. Run the check you have for each of the files from the loop.