The use of PHP dependent tools Monolog

<?php
Require ' vendor/autoload.php '; Automatically load class libraries

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 ' path and logfile file name

Logger::warning Log Level
$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);

The use of PHP dependent tools Monolog