PHP word count function definition and usage

This article mainly introduces the definition and usage of the statistical word count function implemented in PHP, and analyzes the operating techniques related to PHP's statistical operations for strings in the form of examples. Friends in need can refer to it, and I hope it can help everyone.

<?php
//函数定义：
function countWords($str){
  echo (mb_strlen($str, &#39;utf8&#39;) + strlen($str))/2;
}
//使用方法：
$strdemo1=&#39;欢迎访问脚本之家&#39;;
$strdemo2=&#39;http://www.jb51.net&#39;;
$strdemo3=&#39;欢迎访问脚本之家http://www.jb51.net&#39;;
countWords($strdemo1);
echo "<br/>";
countWords($strdemo2);
echo "<br/>";
countWords($strdemo3);
?>

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