Javascript uploader for file, allow to upload in background and in chunks (so not limited by max post size of server). Backend is php.
- Upload out of main thread
- Re-startable upload (even if user quits the browser)
- Upload cancelation
- Allow to upload file bigger than upload_max_filesize and post_max_size = 10M or any other http post limit.
Create two functions kfu_upload_done and kfu_upload_failed that are called when the file has either been uploaded or the upload has failed. They will have an array as the only argument containing :
'max' => // number of chunks to upload,
'chunksize' => // size of single chunk,
'current' => // current number of chunks uploaded,
'filename' => // filename,
'filesize' => // filesize,
'filetype' => // filetype,
'token' => // a token for the upload,
'hash' => // sha256 of the file,
'parts' => // array of each chunk id
You need also to define two constants : KFU_UPLOAD_PATH and KFU_MAX_ALLOWED_SIZE.
KFU_MAX_ALLOWED_SIZE => set the max size that can be uploaded
KFU_UPLOAD_PATH => root path for the uploaded file
The uploaded file will be in KFU_UPLOAD_PATH/$token/temp.bin and the array, in json format, is in KFU_UPLOAD_PATH/$token/metadata.json.
The token is used to check if the upload is allowed or not. Before starting your upload, you will send a message, in whatever way suits your needs, for an upload, check if that upload is allowed, generate a token, create the directory KFU_UPLOAD_PATH/$token which should be writable, send back to the client that will pass the token to the uploaded. When the upload begins, the script will check if that directory exists and is writable, if so, the upload is allowed.