Game-Jaming/Backend/Controllers/FileHandler/FileHandler.php

<?php
/**
 * @param string $gameFileName
 * @param string $gameFileTmp
 * @return string
 */

function ZipFileHandler(string $gameFileName, string $gameFileTmp){
    $fileExtGame = explode('.', $gameFileName);
    $fileActualExtGame = strtolower(end($fileExtGame));

    $allowedFileTypeGame = array('zip');
    if(in_array($fileActualExtGame,$allowedFileTypeGame)){
        $gameFileNewName = uniqid("", true). "." .  $fileActualExtGame;
        if(empty($gameFileName)){
            header("location: ../../../Frontend/index.php?error=emptyFile");
            exit();
        }
        rename($gameFileTmp,"../../Games/".$gameFileNewName);
        return $gameFileNewName;
    }
return NULL;
}

/**
 * @param string $thumbnailFileName
 * @param string $thumbnailFileTmp
 * @return string
 */
function imagesFileHandler(string $thumbnailFileName, string $thumbnailFileTmp){

    $fileExtThumb = explode('.', $thumbnailFileName);
    $fileActualExtThumb = strtolower(end($fileExtThumb));

    $allowedFileTypeThumbnail = array('gif', 'jpeg', 'png', 'svg');

    if(in_array($fileActualExtThumb,$allowedFileTypeThumbnail)){
        $thumbnailFileNewName = uniqid("", true). "." .  $fileActualExtThumb;
        if(empty($thumbnailFileName)){
            header("location: ../../../Frontend/index.php?error=emptyFile");
            exit();
        }
        rename($thumbnailFileTmp,"../../../Frontend/images/".$thumbnailFileNewName);
        return $thumbnailFileNewName;
    }
    return NULL;
}