会很久如果您的代码执行大量日志记录,则会很长时间,因为它将不得不记录,并且其记录的每一行操作将意味着代码中有一行.然而,在任何情况下,不应该复杂,因为日志记录是您可以做的最简单的事情之一.令我担心的是,你提到“有时我甚至要登录2张桌子”.在我的书中,一行,两张,五张,六千张或一千张表由一行进行.每个记录器的代码不会翻倍.如果您要复制一行,并将$log更改为$log2,则显然会出错(tm).

很好,AOP.它有缺点;与debug_backtrace方法一样,性能很高.那么加上代码变得越来越“神奇”,因为当您查看代码本身时,它会执行不清楚的事情.这增加了调试应用程序的时间.

我的$0.02首先,不要重复你自己：每个动作一个日志条目应该是足够的.使用灵活的记录器,可以在运行时连接到某些类.根据“严重性”或“类型”,确定是否将消息实际记录在记录器中.总而言之,只是实现观察者模式：

<?PHP

namespace Foo;

class MailService {
    public function attach( Observes $observer ) {
        $this->observers[] = $observer;
    }

    public function notify( $message,$tyPE = 'notice' ) {
        foreach( $this->observers as $observer ) {
            $observer->notify( $message,$type );
        }
    }

    public function sendMail( ) {
        $this->notify( 'Started sending mails','debug' );
        $mails = array( );
        foreach( $mails as $mail ) {
            try {
                $this->notify( 'Trying to send','debug' );
                $mail->send( );
                $this->notify( 'Mail sent succesfully','debug' );
            }
            catch( Exception $e ) {
                $this->notify( 'Failed to send mail','notice' );
            }
        }
        $this->notify( 'Finished sending mail','debug' );
    }
}

interface Observes {
    public function notify( $message,$type = 'notice' );
}

abstract class Logger implements Observes {
    PRotected $types = array(
        'debug' => 0,'notice' => 1,'warning' => 2,'error' => 3
    );

    protected function code( $type ) {
        return isset( $this->types[$type] ) ? $this->types[$type] : 0;
    }
}

class FileLogger extends Logger implements Observes {

    public function __construct( $filename ) {
        $this->filename = $filename;
    }

    /**
     * @todo replace the method body wITh a call to,say,file_put_contents.
     */
    public function notify( $message,$type = 'notice' ) {
        if( $this->code( $type ) > $this->code( 'notice' ) ) { // only for warning and error.
            echo $message . "\n";
        }
    }


}

class DebugLogger extends Logger implements Observes {
    public function notify( $message,$type = 'notice' ) {
        if( $this->code( $type ) === $this->code( 'debug' ) ) { // only show "debug" notices.
            echo $message . "\n";
        }
    }
}


$service = new MailService( );
$service->attach( new FileLogger( 'yourlog.txt' ) );
$service->attach( new DebugLogger( ) );
$service->sendMail( );