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 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 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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