While loop in PHP

[spoons84]

Im currently trying to get PHP to look through a webpage and pick out a picture of choice. Basically I have coded for the search to look for the keyword, and if 'alt=' is within 40 characters of the key word that picture will be selected.

So in theory if IPOD is searched and is found within the document, alt= will then be searched for, and hopefully something like this will be output:

alt="Apple IPOD 20Gb"

For some reason my while loop seems to be endless, but im having trouble seeing why, heres the code:

if ($code)
{

$input = 'ipod';
$inputText= strpos($code, $input);
}

$topBoundary = $inputText - 600;

$topSectionLength = $inputText - $topBoundary;
$topSection = Substr($code, $topBoundary, $topSectionLength);

if ($topSection)
{

$alt = 'alt=';

$findAlt = strripos($topSection, $alt);
$findAlt = (600 - $findAlt);

$newInput = $inputText;
$newAlt = $findAlt;

while ($newAlt > 40)
	{
	$cutInput = $finishBody - $newInput;
	$startNewInput = Substr($code, $newInput+1, $cutInput);
	$newInput = strpos($startNewInput, $input);
	echo 'This is the new input code';
	echo $newInput;

	$tempTopBoundary = $newInput - 600;


	$tempTopSectionLength = $newInput - $tempTopBoundary;
	$tempTopSection = Substr($code, $tempTopBoundary, $tempTopSectionLength);

$newAlt = strripos($tempTopSection, $alt);

$newAlt = (600 - $newAlt);
}

}

Any views grateful

[mrhappiness]

function search($what, $where, $case_insensitive = false, $before = 20, $after = NULL) {
    $before = (int)$before;
    $after = isset($after) ? (int)$after : $before;
    if (empty($case_insensitive))
        $case_insensitive = '';
    else    $case_insensitive = 'i';
    $what = preg_quote($what, '%');
    $pattern = '%([\\s\\S]{0,'.$before.'}'.$what.'[\\s\\S]{0,'.$after.'})%s'.$case_insensitive;
    preg_match_all($pattern, $where, $matches);
    if (count($matches[0]))
        return    $matches[0];
    return    false;
}


$text = "This is some very very long text and somewhere in it
I hide the word IPoda. I'm curious to know whether I can findIPOdthis
word.
Let the fun begin";


print_r(search('ipod', $text));
echo '<hr />';
print_r(search('ipod', $text, true));

something like this?

[spoons84]

That looks really good!!

Im pretty new to PHP however and having trouble understanding how everything works, could you give a quick explanation?

Also, from this, am I able to do a search in each of the arrays for another word?

Cheers,
Rich