How to make a conditional redirect in PHP?

Question

PHP

Hey! Please help with the task.
Let's say the file file.txt contains the number 70 or 93, it doesn't matter. It is necessary to achieve the result so that a redirect to page2.php occurs when the number 1000 is in file.txt.
Thank you.

Answer 1

$file_path = 'file.txt';
$file_redirect_data = '70';

if (file_exists($file_path)) {
  $file_content = file_get_contents($file_path);

  if ($file_content == $file_redirect_data) {
    header('Location: http://www.example.com/page2.php');
    exit();
  }
}

Answer 2

header("Location: http://www.example.com/");