Number validation not returning the correct results

[nvee]

I have a simple function which checks if a variables passed into the function is numeric and if it is the lenght it should be. Somehow it keeps on returning the error, even if the number is correct.

 

code in html ...

INTVALIDATE($tel,10);

 

function code ...

function INTVALIDATE($var,$lenght) {
$value = strlen($var);
if($var != $value AND !is_numeric($var)) {
	$intresult = "<li>Some of your numbers does not match the correct lenght or is not numeric, please correct this!</li>";
}
return $intresult;
} 

[rarebit]

Your function isn't making too much sense to me (hung over), what are the specifications of your function?

You pass a 'length', but then not use it anywhere!

The 'if' would probably be an 'OR', not 'AND'.

If it's for telephone numbers then i'd expect to receive spaces, ext's, prefixes, codes, etc... Therefore i'd suggest looking at PCRE (e.g. regex), see the manual ([url=http://uk2.php.net/manual/en/function.preg-match.php]preg-match

. Also I did a quick google search for 'pcre telephone' and the first result was:

 

http://benramsey.com/tag/pcre/

[Andy-H]

define("MIN_RANGE", 0); //Minimum integer amount desired...
define("MAX_RANGE", 100); // Maximum integer amount desired...

$options = array( 'options' => array( 'min_range' => MIN_RANGE, 'max_range' => MAX_RANGE ) );
$var     = 50;

if ( filter_var( $var, FILTER_VALIDATE_INT, $options ) === true )
{
   # Var validated as int between 0 and 100
}
else
{
   # Var didn't validate...
}

 

 

filter_var

[rarebit]

oooh, I love my post, pity I can't alter it! LOL

 

P.S. Just reading these new rules now...