Description
Changes a single bit of a string.
Parameters
key
offset
value: bool or int (1 or 0)
Return value
LONG: 0 or 1, the value of the bit before it was set.
Example
$redis->set('key', "*"); // ord("*") = 42 = 0x2f = "0010 1010"
$redis->setBit('key', 5, 1); /* returns 0 */
$redis->setBit('key', 7, 1); /* returns 0 */
$redis->get('key'); /* chr(0x2f) = "/" = b("0010 1111") */
