使用數據的TXT文件

Question

我有一個包含這樣的數據（EURUSD報價）

19710104,000000,0.53690,0.53690,0.53690,0.53690,1 
19710105,000000,0.53660,0.53660,0.53660,0.53660,1 
19710106,000000,0.53650,0.53650,0.53650,0.53650,1 
19710107,000000,0.53680,0.53680,0.53680,0.53680,1 
19710108,000000,0.53710,0.53710,0.53710,0.53710,1 
19710111,000000,0.53710,0.53710,0.53710,0.53710,1 
19710112,000000,0.53710,0.53710,0.53710,0.53710,1 

我希望將一些數據移動到其他文件一樣

0.53690,0.53690,0.53690,0.53690 

，並添加一些文本文件（移動平均和RSI，Stoch ...），因此文件可以通過神經網絡訓練，最終文件必須是這樣的

OPEN, HIGH, LOW, CLOSE, VOL, MA50, MA20, RSI14, StochMain, StochSignal, 

所以我需要一些提示

Answer 1

你應該使用PHP函數fgetcsv和fputcsv。看到下面的工作示例，您可以調整您的需求。

它假定您給出的輸入值的格式爲OPEN，CLOSE，HIGH，LOW，VOL。以移動平均線工作的相同方式引入RSI和隨機指標等。

<?php 

// Prepare variables 
$row = 1; 
$output = array(); 

// Attempt to open the file quotes.txt 
if (($handle = fopen("quotes.txt", "r")) !== FALSE) { 
    while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) { 

     $row++; 

     // This part of the while loop will be hit for each line in the quotes.txt 
     // $data is an array that contains the values of this line from the csv 
     // $output is a new array that you are generating 

     // Create a new sub-array in the output array (add a new line to the main output) 
     $output[$row] = array();  

     // Add the third value of the input array to the start of the new array (the opening price) 
     $output[$row][] = $data[2]; 

     // Add the fourth value of the input array to the new array (the closing price) 
     $output[$row][] = $data[3]; 

     // Add the fifth value of the input array to the new array (the high price) 
     $output[$row][] = $data[4]; 

     // Add the sixth value of the input array to the new array (the low price) 
     $output[$row][] = $data[5]; 

     // Add the seventh value of the input array to the new array (the volume) 
     $output[$row][] = $data[6]; 

     // Add moving average to the new array 
     $output[$row][] = calculate_ma($output, $row); 
    } 
    fclose($handle); 
} 

// Create new file or open existing to save the output to 
$handle = fopen('output.csv', 'w'); 

// Flatten the arrays and save the csv data 
foreach ($output as $file) { 
    $result = []; 
    array_walk_recursive($file, function($item) use (&$result) { 
     $result[] = $item; 
    }); 
    fputcsv($handle, $result); 
} 

/** 
* Calculate the value for the MA using the values in $output. 
*/ 
function calculate_ma($output, $row) { 

    // For this example we will just say that the MA is equal to the closing price of this period 
    // and the previous four periods, divided by 5. 
    $ma = $output[$row][1] + $output[$row-1][1] + $output[$row-2][1] + $output[$row-3][1] + $output[$row-4][1]; 
    $ma = $ma/5; 

    return $ma; 
} 

?> 

上述代碼的輸出，使用相同的輸入，你在你的問題已經粘貼，將是：

0.53690,0.53690,0.53690,0.53690,1,0.10738 
0.53660,0.53660,0.53660,0.53660,1,0.2147 
0.53650,0.53650,0.53650,0.53650,1,0.322 
0.53680,0.53680,0.53680,0.53680,1,0.42936 
0.53710,0.53710,0.53710,0.53710,1,0.53678 
0.53710,0.53710,0.53710,0.53710,1,0.53682 
0.53710,0.53710,0.53710,0.53710,1,0.53692 

記住，前四個均線將是不正確的，因爲他們沒有5個週期的數據來計算5週期的MA。

計算出較大的MA（50期），無碼一個巨大的一堆，與更換MA功能：

function calculate_ma($output, $row) { 
    $period = 50; 

    for ($x = 0 ; $x < $period ; $x++){ 
     $ma = $ma + $output[$row-$x][1]; 
    } 

    $ma = $ma/$period; 

    return $ma; 
} 

Answer 2

我堅信你應該打開文件，逐行閱讀，用''分解，然後存儲每一行​​到某種地圖，做一些計算並最終保存到另一個文件。

http://php.net/manual/en/function.explode.php How to read a file line by line in php