The usleep() function delays program execution for the given number of micro_seconds. A microsecond is one millionth of a second. 例子1. usleep() example <?php// Current timeecho date('h:i:s') . "\n";// wait for 2 secondesusleep(2000000);// back!echo date('h:i:s') . "\...
usleep(rand(10, 1000)); } } while ((!$canWrite) && ((microtime(true) - $startTime) < $wait)); } /** * if you want't to log the number under multi-thread system, * please open the lock, use a+ mod. then fopen the file will not ...