PHP | 计算字符串中的单词总数

Given a string and we have to count the total number of words in it.

给定一个字符串，我们必须计算其中的单词总数。

str_word_count() function

str_word_count()函数

To find the total number of words in a string, we can use str_word_count() function – which is a library function in PHP – it returns the total number of words in the string.

要查找字符串中的单词总数 ，我们可以使用str_word_count()函数(这是PHP中的库函数)，它返回字符串中的单词总数。

Syntax:

句法：

    str_word_count(string,return,char);

Here,

这里，

string is a required parameter, this is the string in which we have to find the total number of words.
string是必需的参数，这是我们必须在其中查找单词总数的字符串。
return – it is an optional parameter used for specifying the return type – it can accept three values
return –它是用于指定返回类型的可选参数–它可以接受三个值
- 0 – Which is the default value, it specifies the return the number of words in the string.
- 0 –这是默认值，它指定返回字符串中的单词数。
- 1 – It specifies the return of the array with the words.
- 1 –它指定带有单词的数组的返回。
- 2 – It specifies the return of the array where key is the position and value is the actual word.
- 2 –它指定数组的返回值，其中key是位置，而value是实际单词。
char – it is an optional parameter – it is used to specify a special character to consider as a word.
char –这是一个可选参数–用于指定要视为单词的特殊字符。

PHP code to count the total number of words in a string

PHP代码计算字符串中单词的总数

<?php
//input string
$str = "The Quick brown fox jumps right over The Lazy Dog";
//counting the words by calling str_word_count function
$response = str_word_count($str);
//printing the result
echo "There are ".$response." Words in <b>".$str."</b>".'<br/>';
//input string
$str = "Hello @ 123 . com";
//counting the words by calling str_word_count function
$response = str_word_count($str);
//printing the result
echo "There are ".$response." Words in <b>".$str."</b>".'<br/>';
//input string
$str = "Hello @ IncludeHelp @ com";
//counting the words by calling str_word_count function
//specify the '@' as a word
$response = str_word_count($str, 0, '@');
//printing the result
echo "There are ".$response." Words in <b>".$str."</b>".'<br/>';
?>

Output

输出量

There are 10 Words in The Quick brown fox jumps right over The Lazy Dog
There are 2 Words in Hello @ 123 . com
There are 5 Words in Hello @ IncludeHelp @ com

Explanation:

说明：

In PHP, We have the function str_word_count() to count the number of words in a string. We use the same to get the number of words in the string ($str) and store the output of the function in ($response) then use echo to print the result.

在PHP中，我们具有函数str_word_count()来计算字符串中的单词数。我们使用相同的方法获取字符串( $ str )中的单词数，并将函数的输出存储在( $ response )中，然后使用echo打印结果。