is_int()

Renegade posted this at 02:48 — 14th February 2005.

Joined: Oct 2002

I have the following two lines of code:

!isset($_POST['rows']) ? $rows = "10" : $rows = trim($_POST['rows']);
!is_int($_POST['rows']) ? $rows = "10" : $rows = trim($_POST['rows']);

What this is ment to do is check if $_POST['rows'] is set. If not, then set it to "10" else just leave it.
Next, it checks if $_POST['rows'] is an integer or not. If it isn't, then set it to "10" else, just leave it.

No matter what number or text I send, it always returns a "10"

Here is the "working program"

I tried looking on php.net for the is_int() function use, but, that didn't really help much...

Busy posted this at 08:14 — 14th February 2005.

He has: 6,151 posts

Joined: May 2001

tried printing the values inbetween?

!isset($_POST['rows']) ? $rows = "10" : $rows = trim($_POST['rows']);
echo "rows = $rows";
!is_int($_POST['rows']) ? $rows = "10" : $rows = trim($_POST['rows']);
echo "rows now = $rows";

CptAwesome posted this at 00:47 — 15th February 2005.

He has: 370 posts

Joined: Dec 2004

Ah, I think your problem is trim:

Quote: string trim ( string str [, string charlist] )

This function returns a string with whitespace stripped from the beginning and end of str.

When you use trim, it becomes a string, instead of an interger, and will always fail is_int(); (thats my best guess)

I'd suggest doing just an is_int anyway, if it fails that, then it's obviously going to fail isset right? so, I owuld simply have:
!$is_int($_POST['rows'] ? $_POST['rows'] = 10;
that pretty much covers all your bases, but I would set a min value and a max value if you haven't already.

Renegade posted this at 02:52 — 15th February 2005.

He has: 3,022 posts

Joined: Oct 2002

The problem has been solved. Thank you.

It turned out that passing anything through POST makes it a string, so I had to use is_gnumeric() instead.