Debug code quickly

gistfile1.php

<?php
function quick_backtrace() {
    $trace = debug_backtrace();

    echo '<pre>';
    foreach ($trace as $entry) {
        if (__FUNCTION__ == $entry['function']) continue;

        if (array_key_exists('file', $entry)) {
            $file = (strlen($entry['file']) >= 30)? '…'.substr($entry['file'], -29) : $entry['file'];
            echo "$file:$entry[line] ";
        }

        echo array_key_exists('type', $entry)? "$entry[class]$entry[type]$entry[function]" : $entry['function'];
        echo "()\n";
    }
    echo '</pre>';
}