if statement success

nefus · 03-11-2009, 02:19 PM

I am pretty sure the following is true:

Code:

$result = mysqli_query( $link , $sql );
if(!$result) { do something if fails}

The ! is used in that instance to run the loop if the sql statement failed. Is there a way to check for success in the same way?

tony · 03-11-2009, 03:53 PM

you mean to check if the query was a success?
it's the same except for the exclamation point.

PHP Code:


			
if($result){

    //do something with the result

}

oh and P.D. if is a language construct not a loop :P

nefus · 03-11-2009, 03:58 PM

Oh.. ha ha. Quite easy. Thanks!

tony · 03-11-2009, 04:29 PM

no problem. it's weird because I learned about this way of comparison the other way around, asking how to compare a false value :P
have fun coding.

nefus · 03-19-2009, 07:12 PM

I ran into something today that looks a tiny bit different.

Any real difference between

Code:

if($result){
    //do something with the result
}

and this

Code:

if(@$result){
    //do something with the result
}

Why use the @ symbol?

allworknoplay · 03-19-2009, 07:25 PM

Quote:

Originally Posted by nefus

I ran into something today that looks a tiny bit different.

Any real difference between

Code:

if($result){
    //do something with the result
}

and this

Code:

if(@$result){
    //do something with the result
}

Why use the @ symbol?

The @ symbol suppresses warning messages.

nefus · 03-19-2009, 07:27 PM

Ah! Thats peachy. Thanks!

Enfernikus · 03-19-2009, 10:38 PM

Please note the @ symbol is very slow and should not be depended above. One shouldn't have errors on a development server showing anyways.

Tanax · 03-20-2009, 10:46 AM

Instead of using the @ supression symbol, which Enfernikus stated is slow, you should display all errors when you're developing the script.
When the script is going "live", you should then use error_reporting(0) to remove all errormsg.