tp5框架使用composer实现日志记录功能示例


						本文实例讲述了tp5框架使用composer实现日志记录功能。分享给大家供大家参考，具体如下：

tp5实现日志记录

1.安装 psr/log





composer require psr/log









它的作用就是提供一套接口，实现正常的日志功能！

我们可以来细细的分析一下，LoggerInterface.php





<?php

namespace Psr\Log;

/**

 * Describes a logger instance.

 *

 * The message MUST be a string or object implementing __toString().

 *

 * The message MAY contain placeholders in the form: {foo} where foo

 * will be replaced by the context data in key "foo".

 *

 * The context array can contain arbitrary data. The only assumption that

 * can be made by implementors is that if an Exception instance is given

 * to produce a stack trace, it MUST be in a key named "exception".

 *

 * See http://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md

 * for the full interface specification.

 */

interface LoggerInterface

{

  /**

   * System is unusable.

   *

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function emergency($message, array $context = array());

  /**

   * Action must be taken immediately.

   *

   * Example: Entire website down, database unavailable, etc. This should

   * trigger the SMS alerts and wake you up.

   *

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function alert($message, array $context = array());

  /**

   * Critical conditions.

   *

   * Example: Application component unavailable, unexpected exception.

   *

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function critical($message, array $context = array());

  /**

   * Runtime errors that do not require immediate action but should typically

   * be logged and monitored.

   *

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function error($message, array $context = array());

  /**

   * Exceptional occurrences that are not errors.

   *

   * Example: Use of deprecated APIs, poor use of an API, undesirable things

   * that are not necessarily wrong.

   *

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function warning($message, array $context = array());

  /**

   * Normal but significant events.

   *

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function notice($message, array $context = array());

  /**

   * Interesting events.

   *

   * Example: User logs in, SQL logs.

   *

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function info($message, array $context = array());

  /**

   * Detailed debug information.

   *

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function debug($message, array $context = array());

  /**

   * Logs with an arbitrary level.

   *

   * @param mixed $level

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function log($level, $message, array $context = array());

}







这是一套日志正常的接口，有层级，有消息，有具体的内容。

LogLevel.php





<?php

namespace Psr\Log;

/**

 * Describes log levels.

 */

class LogLevel

{

  const EMERGENCY = 'emergency';

  const ALERT   = 'alert';

  const CRITICAL = 'critical';

  const ERROR   = 'error';

  const WARNING  = 'warning';

  const NOTICE  = 'notice';

  const INFO   = 'info';

  const DEBUG   = 'debug';

}







定义一些错误常量。

AbstractLogger.php实现接口





<?php

namespace Psr\Log;

/**

 * This is a simple Logger implementation that other Loggers can inherit from.

 *

 * It simply delegates all log-level-specific methods to the `log` method to

 * reduce boilerplate code that a simple Logger that does the same thing with

 * messages regardless of the error level has to implement.

 */

abstract class AbstractLogger implements LoggerInterface

{

  /**

   * System is unusable.

   *

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function emergency($message, array $context = array())

  {

    $this->log(LogLevel::EMERGENCY, $message, $context);

  }

  /**

   * Action must be taken immediately.

   *

   * Example: Entire website down, database unavailable, etc. This should

   * trigger the SMS alerts and wake you up.

   *

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function alert($message, array $context = array())

  {

    $this->log(LogLevel::ALERT, $message, $context);

  }

  /**

   * Critical conditions.

   *

   * Example: Application component unavailable, unexpected exception.

   *

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function critical($message, array $context = array())

  {

    $this->log(LogLevel::CRITICAL, $message, $context);

  }

  /**

   * Runtime errors that do not require immediate action but should typically

   * be logged and monitored.

   *

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function error($message, array $context = array())

  {

    $this->log(LogLevel::ERROR, $message, $context);

  }

  /**

   * Exceptional occurrences that are not errors.

   *

   * Example: Use of deprecated APIs, poor use of an API, undesirable things

   * that are not necessarily wrong.

   *

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function warning($message, array $context = array())

  {

    $this->log(LogLevel::WARNING, $message, $context);

  }

  /**

   * Normal but significant events.

   *

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function notice($message, array $context = array())

  {

    $this->log(LogLevel::NOTICE, $message, $context);

  }

  /**

   * Interesting events.

   *

   * Example: User logs in, SQL logs.

   *

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function info($message, array $context = array())

  {

    $this->log(LogLevel::INFO, $message, $context);

  }

  /**

   * Detailed debug information.

   *

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function debug($message, array $context = array())

  {

    $this->log(LogLevel::DEBUG, $message, $context);

  }

}







Logger.php继承AbstractLogger.php





<?php

namespace Psr\Log;

use app\index\model\LogModel;

/**

 * This Logger can be used to avoid conditional log calls.

 *

 * Logging should always be optional, and if no logger is provided to your

 * library creating a NullLogger instance to have something to throw logs at

 * is a good way to avoid littering your code with `if ($this->logger) { }`

 * blocks.

 */

class Logger extends AbstractLogger

{

  /**

   * Logs with an arbitrary level.

   *

   * @param mixed $level

   * @param string $message

   * @param array $context

   *

   * @return void

   */

  public function log($level, $message, array $context = array())

  {

    // noop

    $logModel = new LogModel();

    $logModel->add($level,$message,json_encode($context));

    echo $logModel->id;

  }

}







这里面的log方法是我自己写的！！！

我们需要把日志存储到数据库中！！！

这里我设计了一个log表，包含id、level、message、 context、ip、url、create_on等。

我创建了一个LogModel.php





<?php

/**

 * @author: jim

 * @date: 2017/11/16

 */

namespace app\index\model;

use think\Model;

/**

 * Class LogModel

 * @package app\index\model

 *

 * 继承Model之后，就可以使用继承它的属性和方法

 *

 */

class LogModel extends Model

{

  protected $pk = 'id'; // 配置主键

  protected $table = 'log'; // 默认的表名是log_model

  public function add($level = "error",$message = "出错啦",$context = "") {

    $this->data([

      'level' => $level,

      'message' => $message,

      'context' => $context,

      'ip' => getIp(),

      'url' => getUrl(),

      'create_on' => date('Y-m-d H:i:s',time())

    ]);

    $this->save();

    return $this->id;

  }

}







一切都准备好了，可以在控制器中使用了！





<?php

namespace app\index\controller;

use think\Controller;

use Psr\Log\Logger;

class Index extends Controller

{

  public function index()

  {

    $logger = new Logger();

    $context = array();

    $context['err'] = "缺少参数id";

    $logger->info("有新消息");

  }

  public function _empty() {

    return "empty";

  }

}









小结：

composer很好很强大！

这里是接口Interface的典型案例，定义接口，定义抽象类，定义具体类。

有了命名空间，可以很好的引用不同文件夹下的库！

互相使用，能够防止高内聚！即便是耦合也相对比较独立！

有了这个日志小工具，平时接口的一些报错信息就能很好的捕捉了！

只要





use Psr\Log\Logger;







然后





$logger = new Logger();

$logger->info("info信息");







使用非常方便！！！

附上获取ip、获取url的方法。





//获取用户真实IP

function getIp() {

  if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown"))

    $ip = getenv("HTTP_CLIENT_IP");

  else

    if (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown"))

      $ip = getenv("HTTP_X_FORWARDED_FOR");

    else

      if (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown"))

        $ip = getenv("REMOTE_ADDR");

      else

        if (isset ($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], "unknown"))

          $ip = $_SERVER['REMOTE_ADDR'];

        else

          $ip = "unknown";

  return ($ip);

}

// 获取url

function getUrl() {

  return 'http://'.$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];

}







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