cachar $_POST como entero PHP – blogdecomputo.com

When you extract the number value directly from $_POST, its data type is a string.
You could use is_numeric to check:

Code:

    if (is_numeric($theNum)) {
        echo $theNum . ” is a number”;
    } else {
        echo $theNum . ” is not a number”;
    }

or a regular expression

Code:

    if (preg_match(‘/^d+$/’, $theNum)) {
        echo $theNum . ” is a number”;
    } else {
        echo $theNum . ” is not a number”;
    }

If you want to cast to an integer data type:

Code:

$theNum = (int)$_POST[‘thenum’];
echo is_int($theNum) ? ‘Number’ : ‘Not’; //Number