Compare two files in PHP

compare.php

<?php

/**
 * Compare the contents of two files and return if they're the same
 *
 * modified version of:
 * https://jonlabelle.com/snippets/view/php/quickly-check-if-two-files-are-identical
 *
 * @param  string $fileOne path to file One
 * @param  string $fileTwo path to file two
 * @return bool
 */
function compareFiles($fileOne, $fileTwo) {
    if (!file_exists($fileOne)
     || !file_exists($fileTwo)
     || filetype($fileOne) !== filetype($fileTwo)
     || filesize($fileOne) !== filesize($fileTwo)
     || !$fp1 = fopen($fileOne, 'rb'))
        return false;

    if (!$fp2 = fopen($fileTwo, 'rb')) {
        fclose($fp1);
        return false;
    }

    $same = true;

    while (!feof($fp1) && !feof($fp2)) {
        if (fread($fp1, 4096) !== fread($fp2, 4096)) {
            $same = false;
            break;
        }
    }

    if (feof($fp1) !== feof($fp2))
        $same = false;

    fclose($fp1);
    fclose($fp2);

    return $same;
}