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Homephp教程php手册php 查找字符串中单词个数

str_word_count() 函数计算字符串中的单词数.

语法:str_word_count(string,return,char)

参数 描述

string 必需,规定要检查的字符串.

return 可选,规定 str_word_count() 函数的返回值.

可能的值:0 - 默认,返回找到的单词的数目,1 - 返回包含字符串中的单词的数组,2 - 返回一个数组,其中的键是单词在字符串中的位置,值是实际的单词.

return 可选,规定被认定为单词的特殊字符,该参数是 php 5.1 中新加的,代码如下:

$str="hello world";          //定义字符串 
$result=str_word_count($str);        //查找单词个数 
echo $result;           //输出的结果 
echo "<br>"; 
$result=str_word_count($str,1);        //返回数组 
print_r($result);           //输出结果数组


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