mysql error - not a valid resource

[_MP]

On some sites i am getting this error:

mysql_fetch_array(): supplied argument is not a valid MySQL result resource

 

The fix seems to be using a '@':

@mysql_fetch_array()

 

Why is it some sites or versions of php require this character?

Should i always use it?

 

Thanks,

Bill

[MadTechie]

infact the @  doesn't "fix" it, it just surpresses the error message

[papaface]

Should i always use it?

You should NEVER EVER us the @ sign. It is bad coding to use it.