Question

<?php

$wordFrequencyArray = array();

function countWordsfrequency($filename) {  
global $wordFrequencyArray;

$contentoffile = (file_get_contents($filename));

$wordArray = preg_split('/[^a-zA-Z0-9]/', $contentoffile, -1, NO_EMPTY);


foreach (array_count_values($wordArray) as $word => $count) {
      if (!isset($wordFrequencyArray[$word])) $wordFrequencyArray[$word] = 0;
        $wordFrequencyArray[$word] += $count;
    }
}


$filenames = array('file1.txt', 'file2.txt','file3.txt','file4.txt');
foreach ($filenames as $filename) {
    countWordsfrequency($filename);
}



print_r($wordFrequencyArray);

?>

这是我的代码，用于查找多个文件中每个单词的频率并打印出来。现在我想要做的是检查查找交叉点哪个单词出现在哪个文件中。例如，如果有一个单词“stack”我想打印它出现在哪些文件中，以及我认为我已经计算过的频率。

最终结果应该与出现单词的文件的频率相似。

我该如何处理？我应该在countWords函数本身的for循环中检查它。

Answer 1

您需要保存更多信息。我会回避使用类，因为你似乎不需要太强大的东西。

<?php
$wordFrequencies = array();

function countWordsFrequency($filename) {  
  global $wordFrequencies;
  $contentoffile = (file_get_contents($filename));
  $wordArray = preg_split('/[^a-zA-Z0-9]/', $contentoffile, -1, NO_EMPTY);

  foreach (array_count_values($wordArray) as $word => $count) {
    $wordFreqInfo = $wordFrequencies[$word];
    if (!isset($wordFreqInfo)) {
      $wordFreqInfo = array();
      $wordFreqInfo['total'] = 0;
      $wordFreqInfo['files'] = array();
      $wordFrequencies[$word] = $wordFreqInfo;
    }

    // If this is the first occurence of this word in the file, start a count.
    if (!isset($wordFreqInfo['files'][$filename]))
      $wordFreqInfo['files'][$filename] = 0;
    }

    // Increment counts for both the total and the file.
    $wordFreqInfo['total'] += $count;
    $wordFreqInfo['files'][$filename] += $count;
  }
}

$filenames = array('file1.txt', 'file2.txt','file3.txt','file4.txt');
foreach ($filenames as $filename) {
  countWordsFrequency($filename);
}

print_r($wordFrequencies);
?>

在多个文件中查找单词的交集/频率

1 个答案: