PHP Exam - Error Logger

<?php

$text = trim($_GET['errorLog']);

$lines = explode('Exception in thread', $text);

$result = '<ul>';
foreach ($lines as $line) {
    if (preg_match('/java\./', $line) && !preg_match('/\(\)/', $line)) {
        $rows = preg_split('/\r?\n/', $line, -1, PREG_SPLIT_NO_EMPTY);

        $exc = preg_split('/[\.\:]/', trim($rows[0]));
        $exception = $exc[sizeof($exc) - 2];

        for ($i = 1; $i < sizeof($rows); $i++) {
            if (strpos(trim($rows[$i]), 'at ') !== false) {
                $elements = preg_split('/[\.\(\)\:]/', trim($rows[1]), -1, PREG_SPLIT_NO_EMPTY);

                $row = trim($elements[4]);
                $file = trim($elements[2]) . '.' . trim($elements[3]);
                $method = trim($elements[1]);

                $result .= '<li>line <strong>' . htmlspecialchars($row) . '</strong> - <strong>' . htmlspecialchars($exception) . '</strong> in <em>' . htmlspecialchars($file) . ':' . htmlspecialchars($method) . '</em></li>';
                break;
            }
        }
    }
}
$result .= '</ul>';

echo $result;