thinkphp/library/think/log/driver/File.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2016 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------

namespace think\log\driver;

use think\App;
use think\Request;

/**
 * 本地化调试输出到文件
 */
class File
{
    protected $config = [
        'time_format' => ' c ',
        'single'      => false,
        'file_size'   => 2097152,
        'path'        => LOG_PATH,
        'apart_level' => [],
        'max_files'   => 0,
        'json'        => false,
    ];

    // 实例化并传入参数
    public function __construct($config = [])
    {
        if (is_array($config)) {
            $this->config = array_merge($this->config, $config);
        }
    }

    /**
     * 日志写入接口
     * @access public
     * @param  array    $log 日志信息
     * @param  bool     $append 是否追加请求信息
     * @return bool
     */
    public function save(array $log = [], $append = false)
    {
        $destination = $this->getMasterLogFile();

        $path = dirname($destination);
        !is_dir($path) && mkdir($path, 0755, true);

        $info = [];
        foreach ($log as $type => $val) {

            foreach ($val as $msg) {
                if (!is_string($msg)) {
                    $msg = var_export($msg, true);
                }