What could be causing a 404 error in a PHP script when variables are correctly passed?

The 404 error in a PHP script when variables are correctly passed could be caused by a misconfigured server or incorrect file paths. To solve this issue, check the server configuration, ensure that the file paths are correct, and verify that the script is properly handling the passed variables.

<?php
// Check if the variables are correctly passed
if(isset($_GET['variable1']) && isset($_GET['variable2'])) {
    // Your PHP code here
} else {
    // Handle the case when variables are not passed correctly
    header("HTTP/1.0 404 Not Found");
    echo "404 Error: Variables not passed correctly";
}
?>