还是记录好ip，做好来访次数统计。等来访超出一定的阀值，就开始超时请求链接和转跳。
不让更多的流量对外输出！
<?php
$ip = getIP();
$data = file_get_contents('./ip20181128.txt');
if (empty($data)) {
$data = array();
} else {
$data = json_decode($data, true);
}
//一小时内
$time = time() + 3600 * 1;
//10次请求
$number = 10;
//默认访问
$visit = true;
if (count($data) > 0) {
if (!empty($data[$ip])) {
$click = $data[$ip]['click'] + 1;
$out_time = isset($data[$ip]['out_time']) ? $data[$ip]['out_time'] : '';
if ($click > $number && $out_time > time()) {
$visit = false;
}
if ($out_time > time() || !empty($out_time)) {
$data[$ip]['click'] = $click;
} else {
$data[$ip] = array('click' => 1, 'time' => time(), 'out_time' => $time);
}
} else {
$data[$ip] = array('click' => 1, 'time' => time(), 'out_time' => $time);
}
} else {
$data[$ip] = array('click' => 1, 'time' => time());
}
file_put_contents('./ip20181128.txt', json_encode($data));
if (!$visit) {
sleep(600);
header("location:https://127.0.0.1:3306/aasdas");
exit;
}
function getIP()
{
if (getenv('HTTP_CLIENT_IP')) {
$ip = getenv('HTTP_CLIENT_IP');
} elseif (getenv('HTTP_X_FORWARDED_FOR')) {
$ip = getenv('HTTP_X_FORWARDED_FOR');
} elseif (getenv('HTTP_X_FORWARDED')) {
$ip = getenv('HTTP_X_FORWARDED');
} elseif (getenv('HTTP_FORWARDED_FOR')) {
$ip = getenv('HTTP_FORWARDED_FOR');
} elseif (getenv('HTTP_FORWARDED')) {
$ip = getenv('HTTP_FORWARDED');
} else {
$ip = $_SERVER['REMOTE_ADDR'];
}
return $ip;
}
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