用于过滤快速重复的请求

无详细内容 无 ?phpfunction C($key){ $c_arr = array( 'DDOS_MEMCACHE_PERSISTENT_ID_COUNT' = 200, 'DDOS_MEMCACHE_HOST' = '127.0.0.1', // 需要重启apache生效 'DDOS_MEMCACHE_PORT' = 11211, // 需要重启apache生效 'DDOS_MEMCACHE_EXPIRE' = 2, ); retu

<?php
function C($key){
    $c_arr = array(
        'DDOS_MEMCACHE_PERSISTENT_ID_COUNT' => 200,
        'DDOS_MEMCACHE_HOST' => '127.0.0.1',    // 需要重启apache生效
        'DDOS_MEMCACHE_PORT' =>  11211,         // 需要重启apache生效
        'DDOS_MEMCACHE_EXPIRE' => 2,
    );
    return $c_arr[$key];
}


/**
 * @brief isDdos 判断是否为过快速的ddos攻击
 *
 * @param $index_arr
 *
 * @return 
 */
function isDdos($index_arr){
    $persistent_id = mt_rand(1, C('DDOS_MEMCACHE_PERSISTENT_ID_COUNT'));
    $m = new Memcached($persistent_id);
    if(!$m->getServerList()) { 
        $m->addServer(C('DDOS_MEMCACHE_HOST'), C('DDOS_MEMCACHE_PORT'));
    } 
    $key = md5(http_build_query($index_arr));
    $ret = $m->get($key) === 1 ? true : false;
    $m->set($key, 1, C('DDOS_MEMCACHE_EXPIRE'));
    return $ret;
}

if(isDdos(array('tjx', 'fdf'))){
    echo 'ddos';
    die();
}

sleep(2);
echo 'return value';