You can try
if (ereg('[^0-9]',$value))
{
do something // if you form value string contains non numerics do
something
}
else
{
settype($value,"integer"); // Its a numeric so set the string to a
integer to allow normal < > etc testing.
}
Mike
----- Original Message -----
From: "Rafael Soares" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, November 17, 2004 10:36 AM
Subject: [PHP-WIN] How to check if a *string* has only numbers...
Hello people!!!
I would like to check if a string contains only numbers, I really can't
realize how to do it.
I tried is_int(), but it don't work because the variable is a string (I used
gettype() to check it) and is_int() returns NULL.
It is to validate some data in a form. The variable I'm trying to test is
the result of this script:
$data = $_POST['data']; // something like 123.456.789
$dataParts = explode($data);
//these are the variable I have to check:
$dataP1 = $dataParts[0];
$dataP2 = $dataParts[1];
$dataP3 = $dataParts[3];
gettype($dataP1), gettype($dataP2) and gettype($dataP3) return string
gettype($dataParts) returns array
Thanks in advance.
Rafael Soares - AgênciaM
Fone: +55 11 4616-1394
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