Error Logger

<?php
$errorLog = $_GET['errorLog'];
$pattern = "/Exception in thread \".*\" java.*\.\s*(.+?)\s*:.*\n.*?\.\s*(.+?)\s*\(\s*(.+?)\s*:\s*(\d+?)\s*\)/";

preg_match_all($pattern, $errorLog, $matches, PREG_SET_ORDER);
echo '<ul>';
foreach ($matches as $match) {
    $line = htmlspecialchars($match[4]);
    $exception = htmlspecialchars($match[1]);
    $filename = htmlspecialchars($match[3]);
    $method = htmlspecialchars($match[2]);
    echo "<li>line <strong>{$line}</strong> - <strong>{$exception}</strong> in <em>{$filename}:{$method}</em></li>";
}

echo '</ul>';