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PHP로 만든 영어단어 카운터 기능

Jul 04, 2017 pm 01:17 PM

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这篇文章主要为大家详细介绍了php英文单词统计器的实现代码，

本文实例为大家分享了英文单词统计器php 实现，供大家参考，具体内容如下

程序开始运行，按"浏览"钮选择一个英文文档，再按"统计 Statistics"钮，即可得到按字母顺序列出的所有单词，及其出现的次数
用于测试的数据文档： data.txt
驱动程序：word.php
output.php 和 StringTokenizer.php 是要求在同一个文件夹中的程序
1. words_statistics_PHP.png

2. word.php

&lt;html&gt;
&lt;style&gt;
td{
  background-color:#CF6;
  width:100px;
  margin:5px;
}
&lt;/style&gt;
&lt;body&gt;
&lt;?php
/**
 * 程序开始运行， 按&quot;浏览&quot;钮选择一个英文文档， 再按&quot;统计&quot;钮，
 * 即可得到按字母顺序列出的所有单词，及其出现的次数
 * 
 * 作者： 许同春 author Tongchun Xu 
 * @开源中国 Open Source, Chna communiity
 * 完成日期：2016年6月10日 completion date: 10 June, 2016
 */
 
require(&quot;StringTokenizer.php&quot;);
require(&quot;output.php&quot;);
  if($_POST[&#39;submit&#39;]){
  if ($_FILES[&quot;file&quot;][&quot;error&quot;] &gt; 0)
  echo &quot;Error: &quot; . $_FILES[&quot;file&quot;][&quot;error&quot;] . &quot;&lt;br /&gt;&quot;;
  else {
$myfile = fopen($_FILES[&quot;file&quot;][&quot;tmp_name&quot;], &quot;r&quot;) or die(&quot;Unable to open file!&quot;);
$str = fread($myfile,filesize($_FILES[&quot;file&quot;][&quot;tmp_name&quot;]));
$delim = &quot;?\\,. /:!\&quot;()\t\n\r\f%&quot;;
$st = new StringTokenizer($str, $delim);
echo &#39;找到字符串: &#39;.$st-&gt;countTokens();
$list=new LinkedList();
 while ($st-&gt;hasMoreTokens()) {
 $list-&gt;orderInsert($st-&gt;nextToken());
 }
$list-&gt;words_count();
$list-&gt;traversal();
fclose($myfile);
  }
}
?&gt;
&lt;h2&gt;英文文档单词统计 Statistics on English words &lt;/h2&gt;
&lt;p&gt;程序开始运行， 按&quot;浏览&quot;钮选择一个英文文档， 再按&quot;统计 Statistics&quot;钮，
 即可得到按字母顺序列出的所有单词，及其出现的次数 &lt;/p&gt;
 
&lt;form action=&quot;word.php&quot; method=&quot;post&quot;
enctype=&quot;multipart/form-data&quot;&gt;
&lt;label for=&quot;file&quot;&gt;英文文档名 File Name:&lt;/label&gt;
&lt;input type=&quot;file&quot; name=&quot;file&quot; id=&quot;file&quot; /&gt; 
&lt;input type=&quot;submit&quot; name=&quot;submit&quot; value=&quot;统计 Statistics&quot; /&gt;
&lt;/form&gt;
&lt;/body&gt;
&lt;/html&gt;

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3. output.php

&lt;meta charset=&quot;utf-8&quot; /&gt;
&lt;?
/**
 * The class LinkedList allows an application to store strings in
 * alphabetical order by calling orderInsert().
 * 此处定义的 LinkedList 类，可以调用它的 方法 orderInsert(),来以字母
 * 大小的顺序储存 英文字符串。
 * 同时记录 英文单词出现的次数
 * 作者： 许同春 author Tongchun Xu 
 * @开源中国 Open Source, China communiity
 * 完成日期：2016年6月10日 completion date: 10 June, 2016
 */
class Node{
  public $data;
  public $frequency;
  public $next;
  function construct($data, $next = null, $frequency = 1){
    $this-&gt;data = $data; //英文字符串
    $this-&gt;next = $next; //指向后继结点的指针
    $this-&gt;frequency=$frequency; //英文字符串出现的次数
  }  
}
 
class LinkedList{
  private $head; //单链表的头结点，不存储数据
 function construct(){//单链表的构造方法
  //头结点的数据为&quot;傀儡&quot;, 不代表 任何数据
  $this-&gt;head = new Node(&quot;dummy 傀儡&quot;); 
  $this-&gt;first = null;
  }
 
 function isEmpty(){ 
    return ($this-&gt;head-&gt;next == null);
  }  
/* orderInsert($data) 方法， 
 * 按给定字符串 $data 的大小, 将其安插到适当的位置，  
 * 以保证单链表中字符串的存储，始终是有序的。 
 */
 function orderInsert($data){
  $p = new Node($data);  
  if($this-&gt;isEmpty()){
    $this-&gt;head-&gt;next = $p;
  }
  else {
  $node= $this-&gt;find($data);
  if(!$node){
  $q = $this-&gt;head;
  while($q-&gt;next != NULL &amp;&amp; strcmp($data, $q-&gt;next-&gt;data)&gt; 0 ){
  $q = $q-&gt;next;
    }
    $p-&gt;next = $q-&gt;next; 
    $q-&gt;next = $p;
  }else
  $node-&gt;frequency++;
  }
 }
 
 function insertLast($data){//将字符串插到单链表的尾部
  $p = new Node($data);
   
  if($this-&gt;isEmpty()){
    $this-&gt;head-&gt;next = $p;
  }
  else{
    $q = $this-&gt;head-&gt;next;
    while($q-&gt;next != NULL)
      $q = $q-&gt;next;
    $q-&gt;next = $p; 
  }   
}
 
  function find($value){//查询是否有给定的字符串
    $q = $this-&gt;head-&gt;next;
    while($q-&gt;next != null){
    if(strcmp($q-&gt;data,$value)==0){
        break;
      }
      $q = $q-&gt;next;  
    }
    if ($q-&gt;data == $value)
    return $q; 
    else
    return null;
  }
 
  function traversal(){//遍历单链表
    if(!$this-&gt;isEmpty()){
    $p=$this-&gt;head-&gt;next;
    echo &quot;输出结果：&lt;table&gt;&lt;tr&gt;&quot;;
    echo &quot;&lt;td&gt;&quot;.$p-&gt;data.&quot;&lt;br&gt;出现次数：&quot;.$p-&gt;frequency.&quot;&lt;/td&gt;&quot;;
    $n=1;
    while($p-&gt;next != null){
      $p=$p-&gt;next;
      echo &quot;&lt;td&gt;&quot;.$p-&gt;data.&quot;&lt;br&gt;出现次数：&quot;.$p-&gt;frequency.&quot;&lt;/td&gt;&quot;;
      $n++;
      if ($n%11==0) echo &quot;&lt;/tr&gt;&lt;tr&gt;&quot;;
      }
       
      echo &quot;&lt;/tr&gt;&lt;/table&gt;&quot;;      
    }else
    echo &quot;链表为空！&quot;;
  }
   
   
  function words_count(){
  if($this-&gt;isEmpty())
  echo &quot;&lt;br&gt;没有储存字符串 &lt;br&gt;&quot;;
    else{
  $counter=0;
  $p=$this-&gt;head-&gt;next;
  while($p-&gt;next != null){
  $p=$p-&gt;next;
  $counter++;
      };
  echo &quot;***共有单词 &quot;.$counter.&quot; 个***&quot;;
    }
  }} 
?&gt;

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4. StringTokenizer.php

&lt;?php
 
/**
 * The string tokenizer class allows an application to break a string into tokens.
 *
 * @author Azeem Michael
 * @example The following is one example of the use of the tokenizer. The code:
 * &lt;code&gt;
 * &lt;?php
 * $str = &quot;this is:@\t\n a test!&quot;;
 * $delim = &quot; !@:&#39;\t\n\0&quot;; // remove these chars
 * $st = new StringTokenizer($str, $delim);
 * echo &#39;Total tokens: &#39;.$st-&gt;countTokens().&#39;&lt;br/&gt;&#39;;
 * while ($st-&gt;hasMoreTokens()) {
 * echo $st-&gt;nextToken() . &#39;&lt;br/&gt;&#39;;
 * }
 * prints the following output:
 * Total tokens: 4
 * this
 * is
 * a
 * test
 * ?&gt;
 * &lt;/code&gt;
 */
class StringTokenizer {
 
  /** @var string
   */
  private $string;
 
  /** @var string
   */
  private $token;
 
  /** @var string
   */
  private $delim;
 
  /**
   * Constructs a string tokenizer for the specified string.
   * @param string $str String to tokenize
   * @param string $delim The set of delimiters (the characters that separate tokens)
   * specified at creation time, default to &quot; \n\r\t\0&quot;
   */
  public function construct($str, $delim=&quot; \n\r\t\0&quot;) {
    $this-&gt;string = $str;
    $this-&gt;delim = $delim;
    $this-&gt;token = strtok($str, $delim); 
  }
 
  /**
   * Destructor to prevent memory leaks
   */
  public function destruct() {
    unset($this);
  }
 
  /**
   * Calculates the number of times that this tokenizer&#39;s nextToken method can
   * be called before it generates an exception
   * @return int - number of tokens
   */
  public function countTokens() {
    $counter = 0;
    while($this-&gt;hasMoreTokens()) {
      $counter++;
      $this-&gt;nextToken();
    }
    $this-&gt;token = strtok($this-&gt;string, $this-&gt;delim);
    return $counter; 
  }
 
  /**
   * Tests if there are more tokens available from this tokenizer&#39;s string. It
   * does not move the internal pointer in any way. To move the internal pointer
   * to the next element call nextToken()
   * @return boolean - true if has more tokens, false otherwise
   */
  public function hasMoreTokens() {
    return ($this-&gt;token !== false);
  }
 
  /**
   * Returns the next token from this string tokenizer and advances the internal
   * pointer by one.
   * @return string - next element in the tokenized string
   */
  public function nextToken() {
    $hold = $this-&gt;token; //hold current pointer value
    $this-&gt;token = strtok($this-&gt;delim); //increment pointer
    return $hold; //return current pointer value
  }
}
?&gt;

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