Help a newbie please

lozza1978

Hi all

this is my first post so please be gentle,

I have a form which uses the post method to send the input to my php page, What i need to do is check the input, Is post sending a string ? numberic ? float ? integer,

I thought I could write an if statement,

if(is_numeric($_POST['age'])){
echo "is numeric";
} else {
echo "sorry etc";
}

the problem with this is that it does not reconigse a float, The code returns "is numeric" which its not!

does anyone know a good way for me to achive this,

thanks

wempy

hmm, everything coming from the web browser via the form will be trated as a string. It is up to you to decide what to do with it. if you simply check the $_POST[] global array the result will always be a string.
Try assigning it to a variable then adding 0 to it, then testing it to see if it is a number or not.

Installer

In addition, you can use the character type functions.

lozza1978

Originally posted by Installer
In addition, you can use the character type functions.

Thats great🙂 thanks for the help, I can now test for numeric and alpha, just need to test for a float now,

any ideas ?

cheers so far,

wempy
I dont quite know what you mean about assigning a variable and adding 0 to it ? could you shed some more light ?

thanks again

kitaeshi

yeah i also dont understand wat do u mean by setting variable as 0

Installer

Try this:

$num = trim($_POST['age']);
if (is_numeric($num)) {
    if (strpos($num, '.') !== false) {
        echo 'float';
    } else {
        echo 'integer';
    }
} else {
    echo 'not numericalistic';
}