码上爬 第14题

本题就是怎样生成m

<?php
$headers[] = 'Cookie: sessionid=acnti2em752v7l48qa9av21r69td509r; ';

$sums = 0;
for ($page=1;$page<=20;$page++){
    $time = get_total_millisecond();
    $sign = sign($time);
    $post['page'] = $page;
    
    $url = "https://mashangpa.com/api/problem-detail/14/data/?m={$sign}";
    //echo $time;echo '<br><br>';echo $url;echo '<br><br>';echo PHP_EOL;

    $code = get_curl_contents($url,$headers,json_encode($post));
    //$code = get_curl_contents($url,$headers,$post);
    $json = json_decode($code,true);
    //echo $code;exit;
    $sum = 0;
    foreach($json['current_array'] as $v){
        $sum +=$v;
    }
    $sums += $sum;
}
echo $sums;


function get_curl_contents($bstrURL, $headers = null, $post = null) {
    $ch = curl_init($bstrURL);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
    if ($headers) {
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    }
    if ($post) {
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
    }
    
    //var_dump($headers);
    //var_dump($post);
    
    
    $data = curl_exec($ch);
    // 关闭CURL会话
    curl_close($ch);
    return $data;
}


function get_total_millisecond() {
    $time = explode(" ", microtime());
    $time = ($time[1] + $time[0]) * 1000;
    $time = round($time) . '';
    return $time;
}


function encrypt(int $a, int $b): int{
    // PHP 的 intdiv 对负数向 0 取整，等价于 WAT 的 i32.div_s
    return $a + intdiv($b, 3) + 16358;
}



function B(int $b, int $f, int $p): int
{
    return $b ^ ($f << ($p % 8));
}

function J(int $b, int $f, int $p): int
{
    return $b ^ ($f >> ($p % 8));
}

function Y(int $b, int $f): int
{
    return $b ^ $f;
}

function sign(string $T): string
{
    $N ='dasdasdarqwdasdasqwdasda'.$T;
    
    $M = 0;
    $W = 0;

    $len = strlen($N);
    for ($L = 0; $L < $len; $L++) {
        $O = ord($N[$L]);
        for ($y = 0; $y < 20; $y++) {
            switch ($y % 3) {
                case 0:
                    $W = B($W, $O, $y);
                    break;
                case 1:
                    $W = J($W, $O, $y);
                    break;
                case 2:
                    $W = Y($W, $O);
                    break;
            }
        }
    }
    // 将整数转为 16 进制字符串并去掉前导 0x
    $hex = dechex($W);
    // 若长度为奇数，补一个前导 0，确保按字节对齐
    if (strlen($hex) & 1) {
        $hex = '0' . $hex;
    }
    // 按字节拆成二进制并做 base64 编码
    return str_replace('=','A',base64_encode($hex.$T));
}

?>