PHP：3个最常见的单词 [英] PHP: 3 Most Common Words

问题描述

这是我正在进行的课程作业，而不是完全理解。只是希望在正确的方向上提供一些帮助。



Directons：

参数：包含在左边用空格分隔的单词的字符串在右边有空格，逗号，句号或问号

返回值：字符串中三个最常见的单词，超过

 <？php  
功能拆分器（$ str）{
  $ freq  = array（）; 
 
  $ words  = preg_split（  / [\。，;：！\ /] \ * * /，$ str）; 
 
  foreach （$ words  as  $ word）{
 < span class =code-sdkkeyword> $ keys  = array_keys（$ freq）; 
 if（in_array（$ word，$ keys））
 $ freq [$ word] ++; 
  else  
 $ freq [$ word] =  1 ; 
} 
  return   $ freq ; 
} 
 
  $ str  =  我喜欢跑步或慢跑锻炼。然后，我喜欢喝大量的液体。; 
 
  $ result  = splitter（$ str）; 
 sort（$ result）; 
  foreach （$ result  as  $ word）{
  $ len  = strlen（$ word）; 
  if （$ len> 3）
  print   $字; 
  else  
  return  false; 
} 
 
 ？>  

此代码不返回任何内容。我已尝试了一些变化而且此时丢失了。

解决方案

str）{

freq = array（）;

words = preg_split（ / [\。，;：！\ /] \s * /，

This is a class assignment that I am working on and not understanding completely. Just would like some help in the right direction.

Directons:
Parameter: A string containing words that are delimited on the left with spaces and on the right with spaces, commas, periods, or question marks
Return value: The three most common words in the string that have more than

<?php
          function splitter($str) {
                $freq = array();

                $words = preg_split("/[\.,;:!\/]\s*/", $str);

                foreach ($words as $word) {
                    $keys = array_keys($freq);
                    if(in_array($word, $keys))
                    $freq[$word]++;
                    else
                    $freq[$word] = 1;
                }
                return $freq;
            }

            $str = "I like to run or jog for exercise. Then, I like to drink plenty of fluids.";

            $result = splitter($str);
            sort($result);
            foreach ($result as $word) {
                $len = strlen($word);
                if ($len > 3)
                print $word;
                else
                return false;
            }

        ?>

This code returns nothing. I have tried a few variations and just lost at this point.

解决方案

str) {

freq = array();

words = preg_split("/[\.,;:!\/]\s*/",

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