This is a simple voting procedure, for just learning PHP and friends is a very good starter program. Here to introduce you, hope to be able to help friends. The system consists of the following four files: The survey.htm of the HTML survey form, the survey.php of the investigation function, and the data.txt of the investigation project. and record the results of the survey survey.txt. of which Data.txt and Survey.txt can be created separately by Notepad and uploaded to the program directory. The
1, open the micro-letter voting brush software Click to import Micro-signal, as shown in Figure 1:
2, in the micro-letter voting software on the vote to enter your vote link address Click to get voting information, as shown in Figure 2:
Introduction of Epoll Series functions
#include
int epoll_create (int size);
int epoll_create1 (int flags);
int epoll_ctl (int epfd, int op, int fd, struct epoll_event *event);
int epoll_wait (int epfd, struct epoll_event *events, int
concept. Unfortunately, this concept has never been seen in university textbooks. It is not used when playing single-chip microcomputer. Event loop is available only in an operating system environment.
The code basis of event loog also needs to use the concept of I/O multiplexing. Currently, three common API interfaces are available: Select, poll, and epoll. Glib is a cross-platform library. in Linux, it
An example is provided to illustrate the usage of select.
1: A very simple usage
Int main (){ Int keyboard; Int ret, I; Char C; Fd_set readfd; Struct timeval timeout; Keyboard = open ("/dev/tty", o_rdonly |
/** @ name: PHP, the array every time (from the set time) to rotate the position of the ranking, polling the leaderboard. Rounds the list of data to a specified second or minute or hour or day. * @ parameter: (array) $list sequential array, passing
The concurrent server, which can be achieved with select, is limited by two aspects.
1, a process can open the maximum file descriptor restrictions. This can be done by adjusting the kernel parameters. You can adjust or use the Setrlimit function
Forged a vote recently, but there's a problem.
get/bb/view.asp?id=199 http/1.1Accept: */*referer:http://www.gzxxw.com/bb/index.asp?page=2Accept-language:zh-cnUa-cpu:x86Accept-encoding:gzip, deflateuser-agent:mozilla/4.0 (compatible; MSIE 7.0;
Traverse all FD, if not good (not ready), join (corresponding FD) wait queue, if all FD is not good (not ready), suspend thread (schedule_timeout) until ready to wake up or timeout, iterate and exit again
static int do_poll (unsigned int nfds,
Today, my colleagues said that Outlook has the function of polling, voting, and that it can be feedback like invitation, and I have looked into the options. Create a new message, then go to option, click Use voting Buttons, the simplest is yes or No,
MINUTE HOUR DOM MONTH DOW
MINUTE How many minutes in an hour (0-59)
HOUR hours in the day (0-23 hours)
DOM number of days in one months (1-31)
Month Monthly (1-12)
DOW Week (0-7), of which 0 and 7 both represent Sunday.
If you want to specify a
Chapter 8 ArrayBlockingQueue source code parsing and arraydeque source code parsing
Note: You need to use ReentrantLock before reading this article or during the reading process. For details, see chapter 5 ReentrantLock source code parsing 1-obtain unfair lock and fair lock () chapter 6 ReentrantLock source code parsin
Location code in order to make each Chinese character has a national uniform code, Location code is the state 94*94 a square, where each row is called a zone, each column is called a bit, combined together to form a location code, we can query the relevant site of a Chinese character location
thread and return immediately before the result cannot be obtained immediately.Object blocking mode and function callingWhether the object is in blocking mode is highly correlated with whether the function is blocked or not, but it is not one-to-one. Blocking objects can have non-blocking calling methods. We can use certain APIs to poll objects.To avoid blocking. For non-blocking objects, calling special functions can also be blocked. The select func
Data Representation-source code, reverse code, complement code, transfer code, and reverse Code complement
So far, we have learned the numbers used in decimal, binary, octal, and hexadecimal notation to represent the actual values. These numbers are called true values, which
1 First is how to use the Web page in your own app, so that you can quickly update the interface without having to upgrade the client, the method is as follows:XML file:2 binding Web pages in activity:public class Mainactivity extends Actionbaractivity {private WebView web; @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (R.layout.activity_main); web= (WebView) Findviewbyid (R.ID.WEB_V); Equiva
Phprequire_once' String.func.php ';//Verify code via GD library/** * Add validation text * @param int $type * @param int $length*/functionBuildrandomstring ($type=1,$length=4){ $row=''; if($type==1){ $row=Join('',Range(0, 9)); }Elseif($type==2){ $row=Join('',Array_merge(Range(' A ', ' Z '),Range(' A ', ' Z '))); }Elseif($type==3){ $row=Join('',Array_merge(Range(' A ', ' Z '),Range(' A ', ' Z '),Range(0, 9))); }; $row=Str_shu
The source code, the anti-code, the re-code, and the reason for using the anti-code and the re-code.
The original blog website has no intention of infringement, but it is convenient to remember it for later review,
Http://www.cnblogs.com/zhangziqiu/archive/2011/03/30/Compute
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