dou47732 2017-12-09 03:28
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I use fsockopen, fgets and fputs to implement communication protocol with other machine. NetBeans give warning to all '@' before fsockopen, fputs, fgets etc. The solution works but without '@' after disconnection of remote device there are warnings (not errors).

I don't want to use error_reporting because it is not more kosher solution. Additionally more code, longer execution time...

Is there any better solution for this?

BTW. the warnings occurs if the destination machine will drop connection. It is possible if device is overload.

$answer=@fgets($socket, $negotiatedMaxLength);

BTW. The solution should work without ini_set - blocked on server and without error_reporting().

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  • dousou1967 2017-12-09 03:36

    One way instead of @ which is obvious way to do it, is to use set_error_handler

    This lets you pipe the errors into the ErrorException class and then you have exceptions instead of errors. That's allows you to use try/catch blocks for the errors.

    set_error_handler(function($severity, $message, $file = 'Unknown', $line = 'Unknown'){
         //typically I set a constant for PHP_ERRORS for the exception code.
         if (error_reporting() != -1 && !(error_reporting() & $severity)) {
             //we'll let this error go to the next error handler
             return; //return null
              //convert the error into an exception
             throw new ErrorExcption($message, 0, $severity, $file, $line );
             //we don't have to return anything because the exception throwing kicks us out of the error handler.
         $answer=fgets($socket, $negotiatedMaxLength);
     }catch(ErrorException $e ){

    Note the & single ampersand is intentional for checking severity level -vs- error reporting level you do bitwise And

    Also the $file and $line are optional, so we set a default for them.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?



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