php控制访问人数的方法详解编程语言

php控制访问人数的方法

//添加访问人数
 public function addfangwen()
 {
 header("Content-type:text/html;charset=utf-8");
 $redis = /RedisClient::getInstance();
 $moban_fangwen = $redis->get('gheliceshi1_fangwen');
 if ($moban_fangwen >= 10) {
 echo '<script>alert("访问人数过多,请稍后访问")</script>';
 exit();
 }else{
 $redis->incr('gheliceshi1_fangwen');
 }
 }
//减少访问人数
 public function jianshaofangwen()
 {
 $redis = /RedisClient::getInstance();
 $redis->decr('gheliceshi1_fangwen');
 if ($redis->get('gheliceshi1_fangwen') <= 0) {
 $redis->set('gheliceshi1_fangwen', 0);
 }
 print_r($redis->get('gheliceshi1_fangwen'));
 exit();
 }

网站入口写

addfangwen();

还有js初始化的时候要长连接 swoole

swoole

$server->on('close', function ($ser, $fd) {
 
 $redis = /RedisClient::getInstance();
 $redis->decr('gheliceshi1_fangwen');
 if ($redis->get('gheliceshi1_fangwen') <= 0) {
 $redis->set('gheliceshi1_fangwen', 0);
 }
 
});

关闭浏览器自然就是断开连接了 用下面方法减少人数

 
jianshaofangwen();

这样就可以使用贷款了 不怕不够用了