usleep(100000) - phpMan

USLEEP(1)                   General Commands Manual                  USLEEP(1)
NAME
       usleep - sleep some number of microseconds
SYNOPSIS
       usleep [number]
DESCRIPTION
       usleep sleeps some number of microseconds.  The default is 1.
WARNING
       usleep  has  been  deprecated,  and will be removed in near future. Use
       sleep(1) instead.
OPTIONS
       --usage Show short usage message.
       --help, -?
              Print help information.
       -v, --version
              Print version information.
BUGS
       Probably not accurate on many machines down to the microsecond.   Count
       on precision only to -4 or maybe -5.
AUTHOR
       Donald Barnes <djb AT redhat.com>
       Erik Troan <ewt AT redhat.com>
SEE ALSO
       sleep(1)
                                 Red Hat, Inc                        USLEEP(1)