<?php
require ‘vendor/autoload.php‘; //自動加載類庫

use Monolog\Logger;
use Monolog\Handler\StreamHandler;

// create a log channel
$log = new Logger(‘SQL‘);
$date = date(‘Y-m-d‘);

//‘app/logs/sql_‘.$date.‘.log‘ 路徑以及日誌文件名

//Logger::WARNING 日誌級別
$log->pushHandler(new StreamHandler(‘app/logs/sql_‘.$date.‘.log‘, Logger::WARNING));

$error_str = ‘[‘.date(‘Y-m-d H:i:s‘).‘]‘;
$error_str .= ‘this is error‘;

// add records to the log
$log->addWarning(‘Foo‘);
$log->addError($error_str);

PHP 依賴工具 monolog的使用