tp3日志函数，巧妙运用

// 全局通用日志工具
function setlog($param = [],$result = [],$name='',$filename = '',$path = ''){
    if (!$path) {
        $path = BASE_PATH.'../logs/';
    }

    if (!$filename) {
        $filename = 'project.log';
    } else {
        $filename = $filename;
    }

    // 没有目录则创建目录
    if (!mkdir($path, 0777, true) && !is_dir($path)) {
        throw new RuntimeException(sprintf('目录 "%s" 创建失败', $path));
    } // 目录，权限，递归

    $arr = array(
        'm'     =>      MODULE_NAME,
        'c'     =>      CONTROLLER_NAME,
        'a'     =>      ACTION_NAME,
        'param'     =>      $param,
        'result'    =>      $result,
        'name'      =>      $name,
        'time'      =>      date('Y-m-d H:i:s')
    );
    file_put_contents($path.$filename,var_export(json_encode($arr,JSON_UNESCAPED_UNICODE|JSON_PRETTY_PRINT|JSON_UNESCAPED_SLASHES),true).PHP_EOL,FILE_APPEND);
    file_put_contents($path.$filename,'================> '.date('Y-m-d H:i:s').' end <================'.PHP_EOL,FILE_APPEND);
}