<?php

$content = file_get_contents("400002.day");


function readByteToInt($bytes, $startPos, $length) {

    $data = substr($bytes, $startPos, $length);

    $result = unpack('v*', $data);

    return $result[1]; 

}

function getValue($value) {

    $num = $value & 0xFFFFFFF; // 取低 28 位

    $b = ($value >> 28) & 0xF; // 取高 4 位

    if (($b & 7) != 0) {

        $num2 = pow(10, $b & 7);

        if (($b & 8) == 0) {

            $num *= $num2; // 乘以 10 的幂

        } else {

            $num /= $num2; // 除以 10 的幂

        }

    }

    return $num;

}

// 从第 10 个字节开始读取长度为 2 的整数

$recordStartPos = readByteToInt($content, 10, 2);

$recordStartPos1 = readByteToInt($content, 12, 2);

$recordStartPos2 = readByteToInt($content, 14, 2);

// 使用 unpack 从 recordStartPos 开始读取长度为 4 的整数

$arr = [];

$data = substr($content, $recordStartPos, 4);

$arr[] = unpack('i', $data)[1]; // 使用 'i' 表示有符号整数


// 读取开盘价

$openPrice = readByteToInt($content, $recordStartPos + 4, 2) / 1000; // 开盘价


$binFile = substr($content, $recordStartPos + 4, 2);

$amount =  unpack('v*', $binFile);   

$arr["kaipan"] = $amount;

$arr[] = $openPrice;


// 读取收盘价

$closePrice = readByteToInt($content, $recordStartPos + 8, 2) / 1000; // 收盘价

$arr[] = $closePrice;


// 读取最高价

$highPrice = readByteToInt($content, $recordStartPos + 12, 2) / 1000; // 最高价

$arr[] = $highPrice;


// 读取最低价

$lowPrice = readByteToInt($content, $recordStartPos + 16, 2) / 1000; // 最低价

$arr[] = $lowPrice;


// 读取最低价

// $lowPrice = readByteToInt($content, $recordStartPos + 20, 4); // 最低价

// $arr[] = $lowPrice;


$binFile = substr($content, $recordStartPos + 20, 4);

$amount = (unpack('I', $binFile)[1] & 0xFFFFFFF) * 10;  

$arr["nihao"] = $amount;


// $lowPrice = readByteToInt($content, $recordStartPos + 24, 4); // 最低价

// $arr[] = $lowPrice;


// 输出结果

print_r($arr);