The curl_setopt() function will set options for a CURL session identified by the ch parameter. The option parameter is the option you want to set, and the value is the value of the option given by the option.
The value should be a long for the following options (specified in the option parameter):
CURLOPT_INFILESIZE: When you are uploading a file to a remote site, this option should be used to tell PHP what the expected size of the infile will be.
CURLOPT_VERBOSE: Set this option to a non-zero value if you want CURL to report everything that is happening.
CURLOPT_HEADER: Set this option to a non-zero value if you want the header to be included in the output.
CURLOPT_NOPROGRESS: Set this option to a non-zero value if you don't want PHP to display a progress meter for CURL transfers
Note: PHP automatically sets this option to a non-zero parameter, this should only be changed for debugging purposes.
CURLOPT_NOBODY: Set this option to a non-zero value if you don't want the body included with the output.
CURLOPT_FAILONERROR: Set this option to a non-zero value if you want PHP to fail silently if the HTTP code returned is greater than 300. The default behaviour is to return the page normally, ignoring the code.
CURLOPT_UPLOAD: Set this option to a non-zero value if you want PHP to prepare for an upload.
CURLOPT_POST: Set this option to a non-zero value if you want