业务需求 nuls_bx 交易对牟定盘口做市

但是要求牟定 bx_usdt 主流交易对, 真实晕 写了个递归 经过测试可用 转换路径如下

nuls_btc btc_usdt bx_eth eth_usdt 经过 四个交易对 转换成目标交易对 汇率<?php

// 都需要对标 bx_usdt

$symbol = 'nuls_coin';

$benchmarkSymbolList = ['nuls_btc' , 'btc_usdt', 'coin_usdt'];

$benchmarkData = [

'nuls_btc' => [

'0.00015635',

'0.00015832',

],

// 'coin_btc' => [

// '0.00000278', // 买

// '0.00002329', // 卖

// ],

'btc_usdt' => [

'3995.00',

'3998.01',

],

'coin_usdt' => [

'0.0924',

'0.1926',

]

];

// $symbol = 'eos_bx';

// $benchmarkSymbolList = ['eos_usdt', 'bx_usdt'];

// $benchmarkData = [

// 'eos_usdt' => [

// 3.6627,

// 3.6549

// ],

// 'bx_usdt' =>[

// 0.1022,

// 0.1011

// ]

// ];

/**

* @des 交易对检测函数

* @param $symbol

* @param $checkSymbolList

* @return bool

* ------------------------------------------------------------

*/

function checkSymbolList($symbol, $checkSymbolList)

{

list($coinFrom, $coinTo) = explode('_', $symbol);

$coinList = [];

foreach ($checkSymbolList as $checkSymbol) {

list($cFrom, $cTo) = explode('_', $checkSymbol);

$coinList[$cFrom] = isset($coinList[$cFrom]) ? $coinList[$cFrom] + 1 : 1;

$coinList[$cTo] = isset($coinList[$cTo]) ? $coinList[$cTo] + 1 : 1;

}

// 目标币对 仅可以出现一个

if (empty($coinList[$coinFrom]) || $coinList[$coinFrom] != 1 || empty($coinList[$coinTo]) || $coinList[$coinTo] != 1) {

return false;

}

unset($coinList[$coinFrom], $coinList[$coinTo]);

// 除目标币种 外 其他币种最少出现两次

if (max($coinList) != 2 || min($coinList) != 2) {

return false;

}

return true;

}

/**

* @des 调用递归

* @param $symbol

* @param $benchmarkSymbolList

* @param $benchmarkData

* @return array

* ------------------------------------------------------------

*/

function integrateRateToBenchMarkPrice($symbol, $benchmarkSymbolList, $benchmarkData)

{

// 选择对标方向

list($coinFrom, $coinTo) = explode('_', $symbol);

// 效验交易对是否正确

if (!checkSymbolList($symbol, $benchmarkSymbolList)) return [];

return rateSymbolConversion($coinFrom, $coinTo, $benchmarkSymbolList, $benchmarkData);

}

/**

* @des 多交易对汇率转换 递归

* @param $coinFrom

* @param $coinTo

* @param $benchmarkSymbolList

* @param $benchmarkData

* @param array $params

* @return array

* ------------------------------------------------------------

*/

function rateSymbolConversion($coinFrom, $coinTo, $benchmarkSymbolList, $benchmarkData, $params = [])

{

// 容错 异常跳出递归

if (!$benchmarkSymbolList) return $params;

// 转换后数据 nuls_usdt

$askConversion = $params[0] ?? 0;

$bidConversion = $params[1] ?? 0;

$conversionCoin = $params[2] ?? '';

// 交易对排序

foreach ($benchmarkSymbolList as $k => $benchmarkSymbol) {

list($from, $to) = explode('_', $benchmarkSymbol);

// 提取交易对

list($bidBenchmark, $askBenchmark) = $benchmarkData[$benchmarkSymbol];

if ($conversionCoin == $from) {

unset($benchmarkSymbolList[$k]);

$askNewBenchmark = bcmul($askConversion, $askBenchmark, 10);

$bidNewBenchmark = bcmul($bidConversion, $bidBenchmark, 10);

echo $benchmarkSymbol ,' => from ', $conversionCoin,PHP_EOL;

return rateSymbolConversion($coinFrom, $coinTo, $benchmarkSymbolList, $benchmarkData, [$bidNewBenchmark, $askNewBenchmark, $to]);

} else if ($conversionCoin == $to) {

unset($benchmarkSymbolList[$k]);

echo $benchmarkSymbol ,' => to ', $conversionCoin, PHP_EOL;

echo 'askBenchmark =>',$askConversion,' ', $askBenchmark, ' bidBenchmark => ', $bidConversion,' ', $bidBenchmark, PHP_EOL;

$askNewBenchmark = bcdiv($askConversion, $bidBenchmark, 10);

$bidNewBenchmark = bcdiv($bidConversion, $askBenchmark, 10);

return rateSymbolConversion($coinFrom, $coinTo, $benchmarkSymbolList, $benchmarkData, [$bidNewBenchmark, $askNewBenchmark, $from]);

}

// 判断当前交易对 为代币 所在代币交易对

if ($coinFrom == $from) {

// 第一次 参数为空 直接复制 调用递归

if (!$params) {

// 注销使用过的数组元素

unset($benchmarkSymbolList[$k]);

echo $benchmarkSymbol ,' => null ', $coinFrom, PHP_EOL;

return rateSymbolConversion($coinFrom, $coinTo, $benchmarkSymbolList, $benchmarkData, [$bidBenchmark, $askBenchmark, $to]);

}

}

}

return $params;

}

$data = integrateRateToBenchMarkPrice($symbol, $benchmarkSymbolList, $benchmarkData);

var_export($data);localhost:Desktop admin$ php test.php

# 执行顺序

nuls_btc => null nuls

btc_usdt => from btc

bz_usdt => to usdt

askBenchmark =>0.6324884000 0.1926 bidBenchmark => 0.6250888635 0.0924

array (

0 => '3.2455288862',

1 => '6.8451125541',

2 => 'coin',

)