How I can validate input on form before upload file?

PHP File uploading question.?

• Firstly I already have a script working which upload 1 file at a time but after browsing the web for hours on advice I was wondering if any of you guys had any idea of a working tutorial or scripts. I've tried 5 different multiple file upload scripts which either have out of date functions or don't work. Any ideas would be great below is the code I use for 1 file upload if you know how to convert it to allow multiple file uploads that would be great but all in all any help would be appreciated. <form method="POST" action="upload-process.php" enctype="multipart/form-data"> <input type="file" name="image1" /> <input type="submit" value="Upload" /> </form> ///////////////////////////// PHP Page //////////////////////////// <?php if ((($_FILES["file"]["type"] == "image/gif") || ($_FILES["file"]["type"] == "image/jpeg") || ($_FILES["file"]["type"] == "image/pjpeg")) && ($_FILES["file"]["size"] < 20000) { if ($_FILES["file"]["error"] > 0) { echo "Return Code: " . $_FILES["file"]["error"] . " "; } else { if (file_exists("uploaded_images/" . $_FILES["file"]["name"])) { echo $_FILES["file"]["name"] . " already exists. "; header('Refresh: 4; url=admin.php'); } else { move_uploaded_file($_FILES["file"]["tm… "uploaded_images/" . $_FILES["file"]["name"]); echo "Image Uploaded successfuly"; header('Refresh: 4; url=admin.php'); } } } else { echo "Invalid file"; } ?> Thanks

• Answer:

  this is not much good coding to upload the files. if you want the secure code i can share you what i am using. for details mail me at sourcehacking[at]gmail.com. I also write one blog content for file uploading both in web server and database server. Hope this will help you. Madan Sapkota