PHP debug to file

debug.php

<?php
function debug()
{
    $args = func_get_args();
    ob_start();
    $dbt = reset(debug_backtrace(false));
    echo date('[d/m/Y H:i:s] ');
    echo end(explode('/', $dbt['file'])) . ':' . $dbt['line'] . "\n";
    foreach($args as &$arg)
    {
        var_dump($arg);
        echo "\n";
    }
    echo "\n";
    $content = ob_get_contents();
    ob_end_clean();
    file_put_contents('/tmp/debug.log', $content, FILE_APPEND);
}