How to check user input whether it's an integer

[szms]

Plese have a look of the following code. that supposed to check the user input for integer only, but it's giving wrong output.

 
<?php
 print "<form method=\"GET\">";
 print "<p>Enter in the number of times below:</p>";
 print "<input type=\"text\" name=\"number\" size=\"30\">";
 print "<input name=\"submit\" type=\"submit\" value=\"send\">";
 print "<input name=\"reset\" type=\"reset\" value=\"reset\">";
 print "</form>" ;

 if (is_int($number))
    print "$number";
 else
    print "Not a number";
 ?>

[paulsbooker]

you need to specify where the form submission is going

in your case you want the form submission to be to itself

so you will need action="your php page"
in your form tag

personally i would drop all these print statements

<form ... >
....
</form>
<? if(is_int($number)) {
echo($number);
}else{

      }

also specifying you form method as POST will prevent sensitive information from showing up tagged onto your url

?>

kind regards
paul

[szms]

First you try it and then tell me.