This is an interface to gettimeofday(2). It returns an associative array containing the data returned from the system call.
Since PHP 5.1.0 there is an optional parameter, return_float, which makes gettimeofday() return a float when it is set to TRUE.
Array keys:
"sec" - seconds since the Unix Epoch
"usec" - microseconds
"minuteswest" - minutes west of Greenwich
"dsttime" - type of dst correction