PHP - get first two sentences of a text?

Question

My variable $content contains my text. I want to create an excerpt from $content and display the first sentence and if the sentence is shorter than 15

Answer 1

Here's a quick helper method that I wrote to get the first N sentences of a given body of text. It takes periods, question marks, and exclamation points into account and defaults to 2 sentences.

function tease($body, $sentencesToDisplay = 2) {
    $nakedBody = preg_replace('/\s+/',' ',strip_tags($body));
    $sentences = preg_split('/(\.|\?|\!)(\s)/',$nakedBody);

    if (count($sentences) <= $sentencesToDisplay)
        return $nakedBody;

    $stopAt = 0;
    foreach ($sentences as $i => $sentence) {
        $stopAt += strlen($sentence);

        if ($i >= $sentencesToDisplay - 1)
            break;
    }

    $stopAt += ($sentencesToDisplay * 2);
    return trim(substr($nakedBody, 0, $stopAt));
}