Laravelでお手製ライブラリを使いたい時のTips ref: http://qiita.com/syossan27/items/c69acc3044424a210932

file0.txt

mkdir libraries

file1.txt

ClassLoader::addDirectories(array(        
    app_path().'/commands',
    app_path().'/controllers',
    app_path().'/models',
    app_path().'/database/seeds',
    app_path().'/libraries'　←追加！
));

file2.txt

"autoload": {

    "classmap": [    
        "app/commands",
        "app/controllers",
        "app/models",
        "app/database/migrations",
        "app/database/seeds",
        "app/tests/TestCase.php",
        "app/libraries"　←追加！
    ]
}

file3.txt

<?php

class Helper
{
    public static function test(){
        print_r("テストだよ！");
        Log::debug("テストだよ！");
    } 
}

file4.txt

index(){
    Helper::test();
}