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Re: Implied cast differs from explicit cast

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Arno Welzel, 2012-01-17 06:59:

> Jerry Stuckle, 2012-01-16 14:45:
> 
>> On 1/16/2012 8:28 AM, The Natural Philosopher wrote:
>>> lb wrote:
>>>> jstucklex@attglobal.net wrote:
>>>>> ...
>>>>> No, it is not. '0x12' is a hex number, not an integer. (int)'0x12'
>>>>> converts this correctly to 0.
>>>
>>> Looks like Jerry doesn't know what an integer is either.
>>>
>>> A hex number of course *is* an integer, unless its a hex representation
>>> of floating point.
>>>
>>> Killfile the prat like I have.
>>>
>>>
>>
>> 0x12 is not an integer.  It is a hexadecimal value.
> 
> No, 0x12 (and *not* "0x12") is the hexadecimal *representation* of the
> value 18. There is no thing like "hexadecimal value" and "0x12" is a
> *string* and not a number at all.
> 
> In fact PHP only knows to types of numbers: integers and floating point.
> There is no "hexadecimal" data type.
> 
>> It can have the same bit pattern as an integer - but it can also have
>> the same bit pattern as a character (Ctrl-R, to be exact).
> 
> Which also applies to the value 18 - this can also be the value of a
> character.
> 
> Example:
> 
> <?php
> $a = 0x12;
> 
> print $a;
> ?>
> 
> Result:
> 
> Value of $a: 18, type of $a: integer

Sorry - the example was not complete:

<?php
$a = 0x12;

$a = intval($a, 16);

print 'Value of $a: ' . $a . ', type of $a: ' . gettype($a);
?>



-- 
Arno Welzel
http://arnowelzel.de
http://de-rec-fahrrad.de

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Implied cast differs from explicit cast lb <lb2048@pobox.com.delete> - 2012-01-16 01:10 +0000
  Re: Implied cast differs from explicit cast Jerry Stuckle <jstucklex@attglobal.net> - 2012-01-15 20:51 -0500
    Re: Implied cast differs from explicit cast lb <lb2048@pobox.com.delete> - 2012-01-16 03:08 +0000
      Re: Implied cast differs from explicit cast Jerry Stuckle <jstucklex@attglobal.net> - 2012-01-15 22:39 -0500
        Re: Implied cast differs from explicit cast Arno Welzel <usenet@arnowelzel.de> - 2012-01-16 08:42 +0100
          Re: Implied cast differs from explicit cast Curtis Dyer <dyer85@gmail.com> - 2012-01-16 09:04 +0000
          Re: Implied cast differs from explicit cast Jerry Stuckle <jstucklex@attglobal.net> - 2012-01-16 08:25 -0500
            Re: Implied cast differs from explicit cast "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2012-01-16 19:51 +0100
      Re: Implied cast differs from explicit cast The Natural Philosopher <tnp@invalid.invalid> - 2012-01-16 13:28 +0000
        Re: Implied cast differs from explicit cast Jerry Stuckle <jstucklex@attglobal.net> - 2012-01-16 08:45 -0500
          Re: Implied cast differs from explicit cast Arno Welzel <usenet@arnowelzel.de> - 2012-01-17 06:59 +0100
            Re: Implied cast differs from explicit cast Arno Welzel <usenet@arnowelzel.de> - 2012-01-17 07:00 +0100
              Re: Implied cast differs from explicit cast Jerry Stuckle <jstucklex@attglobal.net> - 2012-01-17 08:17 -0500
            Re: Implied cast differs from explicit cast Jerry Stuckle <jstucklex@attglobal.net> - 2012-01-17 08:16 -0500
              Re: Implied cast differs from explicit cast Arno Welzel <usenet@arnowelzel.de> - 2012-01-19 13:36 +0100
                Re: Implied cast differs from explicit cast Arno Welzel <usenet@arnowelzel.de> - 2012-01-19 13:39 +0100
                Re: Implied cast differs from explicit cast Jerry Stuckle <jstucklex@attglobal.net> - 2012-01-19 09:06 -0500
                Re: Implied cast differs from explicit cast Jerry Stuckle <jstucklex@attglobal.net> - 2012-01-19 09:05 -0500
                Re: Implied cast differs from explicit cast The Natural Philosopher <tnp@invalid.invalid> - 2012-01-19 15:01 +0000
                Re: Implied cast differs from explicit cast Jerry Stuckle <jstucklex@attglobal.net> - 2012-01-19 14:41 -0500
  Re: Implied cast differs from explicit cast "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2012-01-16 09:49 +0100
  Re: Implied cast differs from explicit cast "Álvaro G. Vicario" <alvaro.NOSPAMTHANX@demogracia.com.invalid> - 2012-01-16 11:48 +0100
    Re: Implied cast differs from explicit cast lb <lb2048@pobox.com.delete> - 2012-01-17 02:35 +0000

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