TYPO3 log FileWriter configuration

logFileWriterConfiguration.php

<?php 

// Writer log configuration
$logFolder = '/path_to_log_folder/';
$GLOBALS['TYPO3_CONF_VARS']['LOG']['writerConfiguration'] = array(
    \TYPO3\CMS\Core\Log\LogLevel::EMERGENCY => array(
        'TYPO3\\CMS\\Core\\Log\\Writer\\FileWriter' => array(
            'logFile' => $logFolder . 'php_0_emergencies.log'
        )
    ),
    \TYPO3\CMS\Core\Log\LogLevel::ALERT=> array(
        'TYPO3\\CMS\\Core\\Log\\Writer\\FileWriter' => array(
            'logFile' => $logFolder . 'php_1_alerts.log'
        )
    ),
    \TYPO3\CMS\Core\Log\LogLevel::CRITICAL=> array(
        'TYPO3\\CMS\\Core\\Log\\Writer\\FileWriter' => array(
            'logFile' => $logFolder . 'php_2_critical.log'
        )
    ),
    \TYPO3\CMS\Core\Log\LogLevel::ERROR => array(
        'TYPO3\\CMS\\Core\\Log\\Writer\\FileWriter' => array(
            'logFile' => $logFolder . 'php_3_errors.log'
        )
    ),
    \TYPO3\CMS\Core\Log\LogLevel::WARNING=> array(
        'TYPO3\\CMS\\Core\\Log\\Writer\\FileWriter' => array(
            'logFile' => $logFolder . 'php_4_warnings.log'
        )
    ),
#    \TYPO3\CMS\Core\Log\LogLevel::INFO=> array(
#        'TYPO3\\CMS\\Core\\Log\\Writer\\FileWriter' => array(
#            'logFile' => $logFolder . 'php_5_infos.log'
#        )
#    ),
#    \TYPO3\CMS\Core\Log\LogLevel::NOTICE=> array(
#        'TYPO3\\CMS\\Core\\Log\\Writer\\FileWriter' => array(
#            'logFile' => $logFolder . 'php_6_notices.log'
#        )
#    ),
#    \TYPO3\CMS\Core\Log\LogLevel::DEBUG=> array(
#        'TYPO3\\CMS\\Core\\Log\\Writer\\FileWriter' => array(
#            'logFile' => $logFolder . 'php_7_debug.log'
#        )
#    ),
);