php简单统计字符串单词数量的方法_PHP

<?php 
  function word_count($sentence){ 
    $array = explode(" ", $sentence); 
    return count($array); 
  } 
  $words = word_count("The is a group of words"); 
  echo $words; 
?>

希望本文所述对大家的php程序设计有所帮助。