yupe\helpers\YText::wordWrap PHP Method

    public function wordWrap($str, $charlim = '76')
    {
        // Se the character limit
        if (!is_numeric($charlim)) {
            $charlim = 76;
        }
        // Reduce multiple spaces
        $str = preg_replace("| +|", " ", $str);
        // Standardize newlines
        if (strpos($str, "\r") !== false) {
            $str = str_replace(["\r\n", "\r"], "\n", $str);
        }
        // If the current word is surrounded by {unwrap} tags we'll
        // strip the entire chunk and replace it with a marker.
        $unwrap = [];
        if (preg_match_all("|(\\{unwrap\\}.+?\\{/unwrap\\})|s", $str, $matches)) {
            for ($i = 0; $i < count($matches['0']); $i++) {
                $unwrap[] = $matches['1'][$i];
                $str = str_replace($matches['1'][$i], "{{unwrapped" . $i . "}}", $str);
            }
        }
        // Use PHP's native function to do the initial wordwrap.
        // We set the cut flag to FALSE so that any individual words that are
        // too long get left alone.  In the next step we'll deal with them.
        $str = wordwrap($str, $charlim, "\n", false);
        // Split the string into individual lines of text and cycle through them
        $output = "";
        foreach (explode("\n", $str) as $line) {
            // Is the line within the allowed character count?
            // If so we'll join it to the output and continue
            if (strlen($line) <= $charlim) {
                $output .= $line . "\n";
                continue;
            }
            $temp = '';
            while (strlen($line) > $charlim) {
                // If the over-length word is a URL we won't wrap it
                if (preg_match("!\\[url.+\\]|://|wwww.!", $line)) {
                    break;
                }
                // Trim the word down
                $temp .= substr($line, 0, $charlim - 1);
                $line = substr($line, $charlim - 1);
            }
            // If $temp contains data it means we had to split up an over-length
            // word into smaller chunks so we'll add it back to our current line
            $output .= $temp != '' ? $temp . "\n" . $line : $line;
            $output .= "\n";
        }
        // Put our markers back
        if (count($unwrap) > 0) {
            foreach ($unwrap as $key => $val) {
                $output = str_replace("{{unwrapped" . $key . "}}", $val, $output);
            }
        }
        // Remove the unwrap tags
        $output = str_replace(['{unwrap}', '{/unwrap}'], '', $output);
        return $output;
    }