php 之 日志系統seaslog
特點：
1、高性能（使用C語言編寫的）。
2、無需配置。
3、功能完善、使用簡單。
安裝：
打開php的擴展官網：https://pecl.php.net/。
然后搜索Seaslog，
選擇最新的版本下載：
wget https://pecl.php.net/get/SeasLog-1.8.4.tgz
解壓：
tar zxvf SeasLog-1.8.4.tgz
然后進入SeasLog目錄
cd SeasLog-1.8.4/
然后執行phpize：
關於什么是phpize，參考博客：https://blog.csdn.net/qq_16399991/article/details/70577740。
phpize
如果顯示命令未找到：
就先安裝php-dev：
sudo apt-get install php5-dev
下一步，執行configure：
./configure
如果報錯，顯示命令未找到php-config，就需要添加自己的php路徑：
./configure -- with-php-config=/usr/local/php/bin/php-config
下一步：
sudo make && make install
如果提示目錄沒有權限，就修改指定目錄的權限。
安裝結果：
See any operating system documentation about shared libraries for more information, such as the ld(1) and ld.so(8) manual pages. ---------------------------------------------------------------------- Build complete. Don't forget to run 'make test'. Installing shared extensions:
進入目錄查看：
cd /usr/lib/php5/20121212/
可以看到：seaslog.so。
然后修改php.ini文件。
如果不知道php.ini文件在哪，可以通過phpinfo查看。
Nginx：
Loaded Configuration File /etc/php5/fpm/php.ini
apache：
Loaded Configuration File /etc/php5/apache2
打開php.ini，增加一行：
extension = "seaslog.so"
然后重啟nginx服務或apache服務，再查看phpinfo，就可以看到安裝成功。
打開Seaslog的github：https://github.com/SeasX/SeasLog。
找到Seaslog.ini，復制內容到php.ini中。
;configuration for php SeasLog module extension = seaslog.so ;Default Log Base Path seaslog.default_basepath = "/var/log/www" ;Default Logger Path seaslog.default_logger = "default" ;The DateTime Style. Default "Y-m-d H:i:s" seaslog.default_datetime_format = "Y-m-d H:i:s" ;Default Log template. ;Default "%T | %L | %P | %Q | %t | %M" seaslog.default_template = "%T | %L | %P | %Q | %t | %M" ;Switch use the logger with folder. ;1-Y(Default) 0-N seaslog.disting_folder = 1 ;Switch use the logger with type. ;1-Y 0-N(Default) seaslog.disting_type = 0 ;Switch use the logger with hour. ;1-Y 0-N(Default) seaslog.disting_by_hour = 0 ;Switch use the log buffer with memory. ;1-Y 0-N(Default) seaslog.use_buffer = 0 ;The buffer size seaslog.buffer_size = 100 ;disable buffer in cli ;1-Y 0-N(Default) seaslog.buffer_disabled_in_cli = 0 ;Record logger level. ;0-EMERGENCY 1-ALERT 2-CRITICAL 3-ERROR 4-WARNING 5-NOTICE 6-INFO 7-DEBUG 8-ALL ;Default 8 (All of them). ; ; Tips: The configuration item has changed since the 1.7.0 version. ; Before the 1.7.0 version, the smaller the value, the more logs are taken according to the level: ; 0-all 1-debug 2-info 3-notice 4-warning 5-error 6-critical 7-alert 8-emergency ; Before the 1.7.0 version, Default 0 (All of them). seaslog.level = 8 ;Log function recall depth ;Will affected variable `LineNo` in `%F` ;Default 0 seaslog.recall_depth = 0 ;Automatic Record notice with default logger ;1-Y 0-N(Default) seaslog.trace_notice = 0 ;Automatic Record warning with default logger ;1-Y 0-N(Default) seaslog.trace_warning = 0 ;Automatic Record final error with default logger. ;1-Y(Default) 0-N seaslog.trace_error = 1 ;Automatic Record exception with default logger. ;1-Y 0-N(Default) seaslog.trace_exception = 0 ;Switch the Record Log Data Store. ;1File 2TCP 3UDP (Switch default 1) seaslog.appender = 1 ;Record Log Retry Count ;Default 0 (Do Not Retry) seaslog.appender_retry = 0 ;If you use Record TCP or UDP, configure this remote ip. ;Default "127.0.0.1" seaslog.remote_host = "127.0.0.1" ;If you use Record TCP or UDP, configure this remote port. ;Default 514 seaslog.remote_port = 514 ;If you use Record TCP or UDP, configure this remote timeout. ;Default 1 second seaslog.remote_timeout = 1 ;Trim the \n and \r in log message. ;1-On 0-Off(Default) seaslog.trim_wrap = 0 ;Switch throw SeasLog exception. ;1-On(Default) 0-Off seaslog.throw_exception = 1 ;Switch ignore SeasLog warning. ;1-On(Default) 0-Off seaslog.ignore_warning = 1