What are the potential challenges of allowing users to upload multiple images with a PHP form?

One potential challenge of allowing users to upload multiple images with a PHP form is handling the file uploads and ensuring they are properly processed and stored on the server. To solve this, you can iterate over the uploaded files and move them to a designated folder on the server. 

<?php
if(isset($_FILES['images'])){
    $targetDir = "uploads/";
    foreach($_FILES['images']['tmp_name'] as $key => $tmp_name){
        $targetFile = $targetDir . basename($_FILES['images']['name'][$key]);
        move_uploaded_file($tmp_name, $targetFile);
    }
}
?>

Keywords

file upload PHP form image processing memory limit security vulnerability

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