Debug: log infomation to file

debug.php

<?php
final class Debug
{
    public static function log($message, $file = 'system.log')
    {
        try {
            $logDir = 'log';
            $logFile = $logDir . '/' . $file;

            if (!is_dir($logDir)) {
                mkdir($logDir);
                chmod($logDir, 0750);
            }

            if (!file_exists($logFile)) {
                file_put_contents($logFile, '');
                chmod($logFile, 0640);
            }
            $message = print_r($message, true);
            file_put_contents($logFile, $message, FILE_APPEND);
            file_put_contents($logFile, "\n", FILE_APPEND);
        } catch (Exception $e) {
        }
    }
}

media-query.css

/*Common Style*/

/* Extra small devices (tablets, 480px and up) */
@media (min-width: 480px) {

}

/* Small devices (tablets, 768px and up) */
@media (min-width: 768px) {

}

/* Medium devices (desktops, 992px and up) */
@media (min-width: 992px) {

}

/* Large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {

}

mysql-command.sql

-- Drop database
-- DROP DATABASE statement is used to delete a database.
DROP DATABASE database_name

-- delete the data inside the table, and not the table itself
TRUNCATE TABLE table_name

-- Export database
mysqldump -u root -p database_name > wantedsqlfile.sql
mysqldump -u [user] -p [db_name] | gzip > [filename_to_compress.sql.gz]
mysqldump -u root -p --all-databases > alldb_backup.sql

-- Import database
mysql -u root -p database_name < tut_backup.sql
gunzip < [backupfile.sql.gz] | mysql -u [uname] -p[pass] [dbname]
mysqlimport -u [uname] -p[pass] [dbname] [backupfile.sql]

-- Repair database
mysqlcheck --repair --databases db_name ...
mysqlcheck --repair --all-databases