抓取和分解数据 [英] Grab and Explode Data

问题描述

我对PHP有点新鲜感，并且需要一些关于从文件中爆炸数据的帮助。有问题的文件是： http://data.vattastic.com/vatsim-data.txt！CLIENTS：部分（靠近底部）的数据。有了这些数据，我需要分解它并获取每个：之间的信息。

我试过这段代码，但它给了我一个可变的偏移量错误（ Undefined offset：3 ）

  $ file = file（http://data.vattastic.com/vatsim-data.txt）; 
 foreach（$ file as $ line）
 {
 $ data_record = explode（：，$ line）; 
 
 //只抓取ATC中的数据... 
 if（$ data_record [3] =='ATC'&& $ data_record [16]！ ='1'&& $ data_record [18]！='0'&& stristr（$ data_record [0]，'OBS'）=== FALSE）
 {
这里的代码... 
} 
} 
  

如果有人可以帮我这个，我非常感激。

解决方案

发生这种情况是因为你试图像这样爆炸行：

; ！GENERAL包含常规设置

当你分解这行时，你的 $ data_records
$ b

数组（
[0] =>;！GENERAL包含常规设置）

快速解决方案：

  $ file = file http://data.vattastic.com/vatsim-data.txt）; 
 foreach（$ file as $ line）
 {
 if（strpos（$ line，';'）=== 0）continue; //这是评论。忽略
 $ data_record = explode（：，$ line）; 
 $ col_count = count（$ data_record）; 
 
 switch（$ col_count）{
 case 42：// columns qty = 42，所以这是来自`clients`的行
 //只抓取具有ATC ... 
 if（$ data_record [3] =='ATC'&& $ data_record [16]！='1'&& $ amp; $ data_record [18]！='0' && stristr（$ data_record [0]，'OBS'）=== FALSE）
 {
其余代码在这里... 
} 
 break; 
默认值：
 //这是其他类型的数据，忽略
 break; 
} 
} 
  

I'm sort of new to PHP, and I need some help on exploding data from a file. The file in question is: http://data.vattastic.com/vatsim-data.txt

Basically, I need to get the data under the !CLIENTS: section (near the bottom). With this data, I need to explode it and get the info between each :.

I have tried with this code, but it gives me a variable offset error (Undefined offset: 3)

$file = file("http://data.vattastic.com/vatsim-data.txt");
foreach($file as $line)
{
   $data_record = explode(":", $line);

   // grab only the data that has "ATC" in it...
   if($data_record[3] == 'ATC' && $data_record[16] != '1' && $data_record[18] != '0'&&   stristr($data_record[0],'OBS') === FALSE)
   {
        rest of code here...
   }
}

If someone could help me with this, I'd greatly appreciate it.

解决方案

This happens because you are trying to explode rows like this:

; !GENERAL contains general settings

When you explode that line, you your $data_records looks like this:

Array ( [0] => ; !GENERAL contains general settings )

Quick solution:

$file = file("http://data.vattastic.com/vatsim-data.txt");
foreach($file as $line)
{
   if(strpos($line,';') === 0) continue ; // this is comment. ignoring
   $data_record = explode(":", $line);
   $col_count = count($data_record);

   switch($col_count) {
     case 42: // columns qty = 42, so this is row from `clients`
      // grab only the data that has "ATC" in it...
      if($data_record[3] == 'ATC' && $data_record[16] != '1' && $data_record[18] != '0'&&   stristr($data_record[0],'OBS') === FALSE)
      {
           rest of code here...
      }
      break;
     default:
       // this is other kind of data, ignoring
       break;
   }
}

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