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Re: bug in is_numeric [message #181338 is a reply to message #181336] Sun, 12 May 2013 20:51 Go to previous messageGo to previous message
Jerry Stuckle is currently offline  Jerry Stuckle
Messages: 2598
Registered: September 2010
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Senior Member
On 5/12/2013 2:39 PM, Thomas 'PointedEars' Lahn wrote:
> Jerry Stuckle wrote:
>
>> On 5/12/2013 1:38 PM, Thomas 'PointedEars' Lahn wrote:
>>> Thomas Mlynarczyk wrote:
>>>> Sanders Kaufman schrieb:
>>>> >> if(is_numeric('x11.11c') returns TRUE
>>>> > Try it without the quotation marks around the number.
>>>>
>>>> Which number? x11.11c is not a number.
>>>
>>> The misconception might partially draw from the fact that 0x11 is a
>>> number,
>>> the hexadecimal representation of decimal 16¹ + 16⁰ = 17 (even in PHP).
>>> In other programming languages that require a leading “0” and do not have
>>> “.” as (concatenation) operator,
>>>
>>> x11.11c
>>>
>>> could be the representation of decimal 16¹ + 16⁰ + 16⁻¹ + 16⁻² + 13 ×
>>> 16⁻³ = 17.06958 (BTW, I have written a drop-in replacement for
>>> ECMAScript's parseFloat() that can do that, with the usual rounding
>>> errors [1]).
>>>
>>> In PHP, however,
>>>
>>> x11.11c
>>>
>>> would be equivalent to
>>>
>>> (x11) . (11c)
>>>
>>
>> Wrong, as usual.
>>
>> <snip>
>
> Intentionally misquoted, as usual.
>
>
> F'up2 where it belongs
>
> PointedEars
>

And exactly what is wrong with what I quoted? The rest of your trash
was based on this incorrect premise; it would be a waste of bandwidth to
repost your entire tripe.

But then I guess you like to ride "my.little.pony", which is why you set
the FUP. You can't handle someone correcting your errors. Probably
because you are so seldom correct about anything.

Why don't you get a job where you can understand what's going on?
Hamburger flipper comes to mind...

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex(at)attglobal(dot)net
==================
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