RE: [PHP] Re: regular expresion

[Mark Charette]

> In article <[EMAIL PROTECTED]>,
>  [EMAIL PROTECTED] (Richard) wrote:
> 
> > Hi, I want to validate that a variable only contains numbers. I 
> came up with
> > this code
> 

I came up with this code:

is_numeric($var)

mark C.


-- 
PHP General Mailing List (http://www.php.net/)
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
To contact the list administrators, e-mail: [EMAIL PROTECTED]

[PHP] Re: regular expresion

[CC Zona]

In article <[EMAIL PROTECTED]>,
 [EMAIL PROTECTED] (Richard) wrote:

> Hi, I want to validate that a variable only contains numbers. I came up with
> this code
> 
> $variable = "154545";  ->  must give me true.
> $variable = "$%54545";  ->  must give me false
> $variable = "$%54545";  ->  must give me false
> $variable = "4545;#";  ->  must give me false
> $variable = "004545";  ->  must give me false

Assuming that you actually wanted true on that last one, any of the 
following should do:

if(preg_match('/^[0-9]+$/',$variable))
if(preg_match('/^\d+$/',$variable))
if(ereg('^[0-9]+$',$variable))
if(ereg('^[[:digit:]]+$',$variable))

If you don't consider zero a valid "number", you can use either of these 
instead:

if(preg_match('/^[1-9]+$/',$variable))
if(ereg('^[1-9]+$',$variable))

-- 
CC

-- 
PHP General Mailing List (http://www.php.net/)
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
To contact the list administrators, e-mail: [EMAIL PROTECTED]