Re: Some questions about if and isset.

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Geir Anders Berge wrote:
> I'm sure that this code can be written more efficient, please tell me how,
> but that's not my problem. The problem is that when i run this script all
> lines are executed. I'm sure I'm doing something wrong, but can't find out
> just what.

Okay, it's REALLY hard to see how all three tests could return TRUE...

But what is IN $variable and $constant?

>
> <?php
> if (isset($variable))
> {
> 	if ($variable < $constant)
> 	{
> 	Execute this code if $variable is less than $constant
> 	}
> 	if ($variable > $constant)
> 	{
> 	Execute this code if $variable is more than $constant
> 	}
> 	if ($variable == $constant)
> 	{
> 	Execute this code if $variable and $constant are equal
> 	}
> }
> else
> {
> Execute this code if $variable is not set
> }
> ?>

An alternative not yet mentioned:
if (isset($variable)){
  switch (TRUE){
    case ($variable < $constant):
    break;
    case ($variable > $constant):
    break;
    case ($variable == $constant):
    break;
  }
}
else{
}

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