/system/core/Log.php

<?php

/**
 * Log
 *
 * PHP version 5
 *
 * @package   Castalia
 * @category  Log
 * @link      http://bitbucket.org/localdisk/castalia
 * @author    MATSUO Masaru
 * @copyright 2010 MATSUO Masaru
 * @license   http://opensource.org/licenses/bsd-license.php New BSD License
 *
 */
class Log {

    /**
     * Constructor
     */
    private function __construct() {

    }

    public static function getInstance() {
        return new self;
    }

    /**
     * write log
     * 
     * @param  string $text
     * @return void
     */
    public function write($text) {
        $dir = LOGPATH . date('Ymd') . DS;
        if (is_dir($dir) === FALSE) {
            mkdir($dir);
        }
        $file = $dir . date('Ymd') . '.log';
        file_put_contents($file, $text . "\n", FILE_APPEND);
    }

}