tp5框架使用composer实现日志记录功能示例

tp5框架使用composer实现日志记录功能。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 PsrLog;  /**   * 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 https://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 PsrLog;  /**   * 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 PsrLog;  /**   * 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 PsrLog;  use appindexmodelLogModel;  /**   * 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 appindexmodel;  use thinkModel;  /**   * Class LogModel   * @package appindexmodel   *   * 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 appindexcontroller;  use thinkController;  use PsrLogLogger;  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 PsrLogLogger;

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"];  }