Attempts to return a reference to a concrete Net_SMS instance based on $driver. It wil only create a new instance if no Net_SMS instance with the same parameters currently exists.
Class Details
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Net_SMS_clickatell_http Class implements the HTTP API for accessing the Clickatell (www.clickatell.com) SMS gateway.
Copyright 2003-2005 Marko Djukic <marko@oblo.com>
See the enclosed file COPYING for license information (LGPL). If you did not receive this file, see http://www.fsf.org/copyleft/lgpl.html.
An array of capabilities, so that the driver can report which operations
it supports and which it doesn't. Possible values are:
auth - The gateway require authentication before sending;
batch - Batch sending is supported;
multi - Sending of messages to multiple recipients is supported;
receive - Whether this driver is capable of receiving SMS;
credit - Is use of the gateway based on credits;
addressbook - Are gateway addressbooks supported;
lists - Gateway support for distribution lists.
Returns the parameters for sending messages using this gateway driver, displayed when sending messages. These are filtered out using the default values set for the gateway.
Return: Array of required parameters.
Todo: Would be nice to use a time/date setup rather than minutes from now for the delivery time. Upload field for ringtones/logos?