How can the var_dump function be used to troubleshoot file upload issues in PHP?

When troubleshooting file upload issues in PHP, the var_dump function can be used to inspect the contents of the $_FILES superglobal array to check for any errors or unexpected data. By using var_dump, you can easily see the file information being passed from the form to the server, such as the file name, file size, file type, and any error messages. 

<?php
if ($_FILES['file']['error'] > 0) {
    var_dump($_FILES['file']['error']);
    die('File upload error.');
} else {
    var_dump($_FILES['file']);
    // Process file upload here
}
?>

Keywords

var_dump file upload troubleshooting PHP error detection

Related Questions