$Variable Won't Work In "if" Statement

[Volitics]

The PHP code below is a snippet from an image upload script on which I am working.

If I extract the $AllowableImageHeight variable value from the MySQL database the " if" statement works - but the value of $AllowableImageHeight is "zero". However, if I assign the value to the $AllowableImageHeight variable within the script like so:

$AllowableImageHeight = "50";

the "if" statement works just fine.

As a test, I have echoed the $AllowableImageHeight variable outside of the if statment - it outputs just fine whether the variable is extracted from the MySQL database or whether the variable is assigned on the script page.

I can't figure it out. I've been wrestling with this problem since yesterday. If I extract the variable from the MySQL database it outputs in the browser but it won't work in the "if" statement. However, if I assign the value to the variable directly on the script page the variable works perfectly fine in the "if" statement!!

I would appreciate if anyone could help me out with this problem.

// The $AllowableImageHeight variable value outputs regardless of whether it is extracted from the database or whether or assigned in the script.
echo "$AllowableImageHeight"; // Output as just a test - works fine either way.

// Note: $ActualImageHeight is taken from the image as it is uploaded.

// The "if" statement below works just fine as long as the value is assigned to the $AllowableImageHeight variable on the script page. However, if I extract the value from the MySQL database the "$AllowableImageHeight" variable equates to "zero".
if ($ActualImageHeight > $AllowableImageHeight) {
	$Message[] = "The image height is too great.";
}else{	
	$Success[] = "The image height is within allowable limit.";	
}

Thanks.

Volitics

[drag0n]

I would suggest debugging the code by echoing out the ActualImageHeight variable and if that comes up to be NULL then you have a problem with that. But since I havent seen the rest of your code, I cant say much more.

[Volitics]

dragOn;

Thank you for your response.

I think that I may have found the problem. I've been trying to compare an integer with a string. The number form the database is an integer - the variable in the code is a string.

I'm working on it now.

Volitics

[Volitics]

I got it figured out.

The problem was I was trying to compare apples with oranges. The "$AllowableImageHeight" value from the MySQL database is an integer. I used the "substr() function on the "$ActualImageHeight" value - which turned it into a string.

What I did was apply the "settype()" function to the $ActualImageHeight string, like so: settype($ActualImageHeight, "integer");, to turn it into an integer.

Once $ActualImageHeight is turned into an integer it compared with "$AllowableImageHeight" just fine.