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file upload with filetype and filesize checks

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  1. <?php
  2. 	// Configuration - Your Options
  3. 	$allowed_filetypes = array('.jpg','.gif','.bmp','.png'); // These will be the types of file that will pass the validation.
  4. 	$max_filesize = 524288; // Maximum filesize in BYTES (currently 0.5MB).
  5. 	$upload_path = './files/'; // The place the files will be uploaded to (currently a 'files' directory).
  6.  
  7. 	$filename = $_FILES['userfile']['name']; // Get the name of the file (including file extension).
  8. 	$ext = substr($filename, strpos($filename,'.'), strlen($filename)-1); // Get the extension from the filename.
  9.  
  10. 	// Check if the filetype is allowed, if not DIE and inform the user.
  11. 	if(!in_array($ext,$allowed_filetypes))
  12. 	die('The file you attempted to upload is not allowed.');
  13.  
  14. 	// Now check the filesize, if it is too large then DIE and inform the user.
  15. 	if(filesize($_FILES['userfile']['tmp_name']) > $max_filesize)
  16. 	die('The file you attempted to upload is too large.');
  17.  
  18. 	// Check if we can upload to the specified path, if not DIE and inform the user.
  19. 	if(!is_writable($upload_path))
  20. 	die('You cannot upload to the specified directory, please CHMOD it to 777.');
  21.  
  22. 	// Upload the file to your specified path.
  23. 	if(move_uploaded_file($_FILES['userfile']['tmp_name'],$upload_path . $filename))
  24. 	echo 'Your file upload was successful, view the file <a href="' . $upload_path . $filename . '" title="Your File">here</a>'; // It worked.
  25. 	else
  26. 	echo 'There was an error during the file upload.  Please try again.'; // It failed :(.
  27.  
  28. ?>

URL: http://www.zymic.com/tutorials/php/creating-a-file-upload-form-with-php/

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