What are some potential reasons for a "No such file or directory" error in PHP file upload?

A "No such file or directory" error in PHP file upload can occur if the specified file path is incorrect or if the directory where the file is supposed to be saved does not exist. To solve this issue, double-check the file path and ensure that the directory exists before attempting to save the file.

$upload_directory = 'uploads/';
if (!file_exists($upload_directory)) {
    mkdir($upload_directory, 0777, true);
}

// Rest of the file upload code here