Problem with is_nan()

[shimano55]

I have been trying to implement the is_nan() function into a simple php file, but without success. Here is the code that I've been using.

<?php
$var1 = 'hey';

if(is_NaN($var1)) {
    echo 'its not a number';
}
else {
    echo 'its a number';
}
?>

it works when $var1 is a number, becasue it says 'its a number', but when $var1 is equal to a string, as it is now, the code doesnt output correctly. It gives an error:

Warning: is_nan() expects parameter 1 to be double, string given in /home/ashatay/public_html/shimnet/phphome/math2.php on line 14.

Can someone please help me?

thanks in advance,

shimano55

[LordShryku]

Geesh. We have many duplicate functions.

Try using [man]is_numeric[/man] or [man]ctype_digit[/man]. Or [man]is_int[/man] for strict checking.

[shimano55]

w00t!

thanks man!
now it works!

thanks again 😉

shimano55