sleep Delay execution &reftitle.description; intsleep intseconds Delays the program execution for the given number of seconds. &reftitle.parameters; seconds Halt time in seconds. &reftitle.returnvalues; Returns zero on success, or &false; on errors. If the call was interrupted by a signal, sleep returns the number of seconds left to sleep. &reftitle.errors; If the specified number of seconds is negative, this function will generate a E_WARNING. &reftitle.examples; ]]> This example will output (after 10 seconds) &reftitle.seealso; usleep time_nanosleep time_sleep_until set_time_limit