Make sure you've set
upload_max_filesize in your php.ini to a value higher than 15MB. For example:
upload_max_filesize = 20M post_max_size = 20M
Is there anything that would be preventing a
PHP SOAP Service from uploading a file larger than about 15MB? Smaller files work great, but larger ones fail without any noticeable errors.
Settings that I might need to change? Nothing in the apache logs.