Re: [PHP] Verifying a certain amount of numbers

[Brent Baisley]

I'm pretty sure there will be a problem with using the is_int() 
function. A similar problem was discussed a few weeks ago on this list 
and is_int() will return true for a "number" like 1000e2. The "e" being 
treated as an exponential representation of an integer.

It might be more reliable to add or subtract 0 from the "string" and 
see if it changes. Something like:
if( (strlen($str)==6) && ( strcmp(($str-0),$str)==0))

It may just be easier to use ereg if you won't be looping through a 
bunch of numbers. I don't know what the performance difference is 
between the above function and ereg or preg.

On Wednesday, July 16, 2003, at 09:43 AM, Justin French wrote:

I tested

	if( (strlen($str) == 6) && (is_int($str)) )

vs

	if(ereg('^[0-9]{6}$',$str))

--
Brent Baisley
Systems Architect
Landover Associates, Inc.
Search & Advisory Services for Advanced Technology Environments
p: 212.759.6400/800.759.0577
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