Check Entry for blank spaces

[phpmind]

I have a signup form that I want to validate and check to make sure the user has entered in a character field than contains no spaces.
Example
If MyColumn is entered in as: This is My Row
I want to send an error message back to the user that this entry cannot contain any spaces

In other words this entry should be: ThisisMyRow

Im sure this is probably very simple, your feedback is appreciated.

[satas]

[PHP]
$userText = trim($_GET['userText']);
if (strpos($userTe xt, " ") !== false) {
print "Text contains spaces";
}
[/PHP]

[phpmind]

That worked perfect

Thanks!