Question

I have a variable that is definited by a POST call from a form where it is inputed into a text field. Is there any way to convert this variable to an interger?

From the form:

Lenght: <input name="length" value="10" type="text" id="lenght" size="2" />

From the php code:

$length = $_POST['lenght'];
$url = substr($url, 0, $length);

This doesn’t seem to work and the only reason why I think it isn’t working is because $lenght is defined as text and not an interger.

Answer 1

Two things:

1. It doesn’t work because you misspelled length <-> lenght

2. The correct way to convert a string to an integer is using the function intval.

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$length = intval($_POST['length']);
$url = substr($url, 0, $length);