"require": {
    	"codeexpert/yii2-firephp": "0.1.*@dev"
},

$config = [
    'components' => [
        'log' => [
            'targets' => [
                'firephp' => [
                    'class' => 'codeexpert\log\FirePHPTarget',
                ]
            ],
        ],
    ],
];

\Yii::info('Hello, I am info message', 'test1');
\Yii::warning('Hello, I am warning message', 'test2');
\Yii::error('Hello, I am error message', 'test3');
\Yii::info(array('a'=>'b', 'c'=>'d'), 'array test');