gistfile1.php

<?php

require 'vendor/autoload.php';

Logger::configure(array(
    'appenders' => array(
        'default' => array(
            'class' => 'LoggerAppenderFile',
            'layout' => array(
                'class' => 'LoggerLayoutSimple',
            ),
            'params' => array(
                'file' => 'file.log',
                'append' => false
            ),
        ),
    ),
    'rootLogger' => array(
        'appenders' => array('default'),
    ),
));

$log = Logger::getLogger('foo');
while(true)
{
    $log->info("bar");
    echo "\n---\n";
    echo file_get_contents('file.log');
    sleep(1);
}