strtok()

[sethtrain]

I am trying to get the number of vowels in the string how can I make this work? I always get one more that I should.

        $numvow = 0 ;
        $delims = "'a''e''i''o''u'";
        $vows = strtok ($str, $delims);
        while (is_string ($vows)){
            if ($vows)
            $numvow = $numvow + 1;
            $vows = strtok ($delims);
        }
        $msg = "The number of vowels in your paragraph(s) are: $numvow. <br>(Please use Back Button for more testing...)";
        break; 

If I type:

This is a test. This is a test.

I get:

The number of sentences in your paragraph(s) are: 9.
(Please use Back Button for more testing...)

Can anyone help me with this?

[cmc@savycat.com]

start with $numvow = -1;

[stereofrog]

strtok is a wrong tool for this. You'll get incorrect results if input string starts or ends with a vowel.

preg_match would be probably better:

$num_vowels = preg_match_all("~[aeiou]~", $str);