Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.php > #9320

Re: Booleans compared to strings

Show key headers only | View raw

The Natural Philosopher wrote:

> On 13/05/13 22:46, Thomas 'PointedEars' Lahn wrote:
>> M. Strobel wrote:
>>> Am 13.05.2013 22:24, schrieb Doug Cassidy:
>>>> On Monday, May 13, 2013 6:13:11 AM UTC-7, Jerry Stuckle wrote:
>>>>> On 5/13/2013 8:29 AM, Doug Cassidy wrote:
>>>>>> I dont see why boolean true is equal to string false in any way.
>>>>> A string comparison returns false only if the string is NULL, is an
>>>>> empty string ('') or contains a zero ('0').  All other values
>>>>> (including 'false') are true.
>>>> got it, thanks
>>> My favourite link to comparison in PHP is
>>> http://www.php.net/manual/en/types.comparisons.php
>>> where you have also the "if ($x)" results.
>>>
>>> Highly recommended.
>> Slighty off, though, because “if” is _not_ a function.
> Semantics. It behaves like one, takes two variables and returns a value.

I am not usually reading your postings because of your notorious address 
munging and anonymous posting, but really …

What the *heck* are you talking about?  An “if” *statement* does not return 
anything (in neither programming language where it is a statement), and it 
does not “take two variables”.  It is the *one* “parameter” (for lack of a 
better word) to the statement that is evaluated to a value, which is then 
converted to boolean, which then determines whether or not the adjacent 
statement is executed.


PointedEars 
-- 
Anyone who slaps a 'this page is best viewed with Browser X' label on
a Web page appears to be yearning for the bad old days, before the Web,
when you had very little chance of reading a document written on another
computer, another word processor, or another network. -- Tim Berners-Lee

Back to comp.lang.php | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Booleans compared to strings Doug Cassidy <doug@dougcassidy.com> - 2013-05-13 05:29 -0700
  Re: Booleans compared to strings Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-13 09:13 -0400
    Re: Booleans compared to strings Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-13 17:22 +0200
    Re: Booleans compared to strings Doug Cassidy <doug@dougcassidy.com> - 2013-05-13 13:24 -0700
      Re: Booleans compared to strings "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-05-13 23:22 +0200
        Re: Booleans compared to strings Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-13 23:46 +0200
          Re: Booleans compared to strings The Natural Philosopher <tnp@invalid.invalid> - 2013-05-13 23:28 +0100
            Re: Booleans compared to strings Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-14 00:41 +0200
            Re: Booleans compared to strings Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-13 18:56 -0400
            Re: Booleans compared to strings "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-05-14 21:36 +0200
              Re: Booleans compared to strings The Natural Philosopher <tnp@invalid.invalid> - 2013-05-14 21:17 +0100
                Re: Booleans compared to strings "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-05-15 21:34 +0200
        Re: Booleans compared to strings The Natural Philosopher <tnp@invalid.invalid> - 2013-05-13 23:26 +0100
          Re: Booleans compared to strings Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-13 18:57 -0400
  Re: Booleans compared to strings Robert Heller <heller@deepsoft.com> - 2013-05-13 08:57 -0500
    Re: Booleans compared to strings Doug Cassidy <doug@dougcassidy.com> - 2013-05-13 13:23 -0700
  Re: Booleans compared to strings Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-13 17:18 +0200
    Re: Booleans compared to strings The Natural Philosopher <tnp@invalid.invalid> - 2013-05-13 23:21 +0100

csiph-web