azure-storage-common/src/Common/Logger.php
public static function log($var, $tip = Resources::EMPTY_STRING)
    {
        if (!empty($tip)) {
            error_log($tip . "\n", 3, self::$_filePath);
        }

        if (is_array($var) || is_object($var)) {
            error_log(print_r($var, true), 3, self::$_filePath);
        } else {
            error_log($var . "\n", 3, self::$_filePath);
        }
    }
public static function log($var, $tip = Resources::EMPTY_STRING)
    {
        if (!empty($tip)) {
            error_log($tip . "\n", 3, self::$_filePath);
        }

        if (is_array($var) || is_object($var)) {
            error_log(print_r($var, true), 3, self::$_filePath);
        } else {
            error_log($var . "\n", 3, self::$_filePath);
        }
    }
Logs $var to file.

@param mixed  $var The data to log.
@param string $tip The help message.

@return void