php man page for curl_multi_select

CURL_MULTI_SELECT(3)							 1						      CURL_MULTI_SELECT(3)

curl_multi_select - Wait for activity on any curl_multi connection

SYNOPSIS
       int curl_multi_select (resource	$mh, [float  $timeout = 1.0])

DESCRIPTION
	Blocks until there is activity on any of the curl_multi connections.

PARAMETERS
	      o $mh
		-A cURL multi handle returned by curl_multi_init(3).

	      o $timeout
		- Time, in seconds, to wait for a response.

RETURN VALUES
	On  success,  returns  the  number  of	descriptors contained in the descriptor sets. This may be 0 if there was no activity on any of the
       descriptors. On failure, this function will return -1 on a select failure (from the underlying select system call).

SEE ALSO
       curl_multi_init(3).

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