PHP/String/str word count

mixed str_word_count ( string str [, int count_type [, string char_list]] ) returns the number of words in a string

   <source lang="html4strict">

<?

   $str = "This is a test, only a test, and nothing but a test.";
   $a = str_word_count($str, 1);
   $b = str_word_count($str, 2);
   $c = str_word_count($str);
   print_r($a);
   print_r($b);
   echo "There are $c words in the string\n";

?>

 </source>
   
  

str_word_count-2.php

   <source lang="html4strict">

<?php $summary = <<< summary this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. summary;

  $words = str_word_count($summary,2);
  $frequency = array_count_values($words);
  print_r($frequency);

?>

 </source>
   
  

str_word_count.php

   <source lang="html4strict">

<?php $summary = <<< summary this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. this is a test. summary;

  $words = str_word_count($summary);
  echo "Total words in summary: $words";

?>

 </source>