| Re: AND in the if statement [message #171290 is a reply to message #171262] |
Thu, 30 December 2010 01:43   |
Kim Andr Aker
Messages: 17
Registered: September 2010
Karma:
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Junior Member |
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På Wed, 29 Dec 2010 23:00:57 +0100, skrev richard <member(at)newsguy(dot)com>:
> On Wed, 29 Dec 2010 13:05:25 -0800 (PST), Captain Paralytic wrote:
>
>> On Dec 29, 8:53 pm, richard <mem...@newsguy.com> wrote:
>>> On Wed, 29 Dec 2010 20:37:05 +0000, Denis McMahon wrote:
>>>> On 29/12/10 19:37, richard wrote:
>>>> > Ok smart people, answer me this as I have not yet found an answer
>>>> > googling.
>>>
>>>> > if (a=1) echo "hello";
>>>
>>>> You haven't been listening.
>>>
>>>> You have been told what is wrong with this at least twice in the last
>>>> two days. You are failing to absorb this essential and fundamental
>>>> piece
>>>> of php.
>>>
>>>> > In BASIC, I can say, if a=1 AND b=2 then do this.
>>>> > Meaning, both conditions MUST be true to get to "do this".
>>>
>>>> php is not basic. You need to use the correct php syntax and
>>>> constructs
>>>> to do things in php. When you learn the basic php syntaxes and
>>>> constructs, people may become more helpful.
>>>
>>>> > Is it possible to include AND in the PHP if and if so, how?
>>>
>>>> > Maybe like, if (a=1 and b=2) echo "hello";
>>>
>>>> You say you are familiar with the php.net website, yet you obviously
>>>> managed to miss pages referring to control structures, specifically
>>>> the
>>>> use of if, and logical and comparison operators, despite the fact that
>>>> they can be found in the clearly labelled control structures and
>>>> operators sections of the clearly labelled language reference section
>>>> of
>>>> the clearly labelled manual.
>>>
>>>> Therefore, for your next lesson, go to the php.net website, find the
>>>> manual pages that deal with:
>>>
>>>> Manual
>>>> Language Reference
>>>> Operators
>>>> Operator Precedence
>>>
>>>> Manual
>>>> Language Reference
>>>> Operators
>>>> Comparison Operators
>>>
>>>> Manual
>>>> Language Reference
>>>> Operators
>>>> Logical Operators
>>>
>>>> Manual
>>>> Language Reference
>>>> Control Structures
>>>> If
>>>
>>>> Once you have read those pages, you will either know the answer to the
>>>> questions that you have asked here, or, if you do not then know the
>>>> answers, will instead know that you have no aptitude whatsoever for
>>>> programming in php and should find another hobby, probably one that
>>>> does
>>>> not involve computers.
>>>
>>>> Rgds
>>>
>>>> Denis McMahon
>>>
>>> If my syntax is wrong then so is the coding at php.net.
>>> From php.net's example:
>>> <?php
>>> if ($a > $b)
>>> echo "a is bigger than b";
>>> ?>
>>>
>>> Where I may use a single = operator in a post, it is only to show what
>>> I'm
>>> after in the whole.
>>> I understand that it is best to use double == operators in real life.
>>
>> Not "best" you idiot. In php = is an assignment operator and == is a
>> comparison one. They do completely different things.
>>
>> php.net is not wrong, you are an idiot.
>
> Yet, I haven't seen anything on php.net where this is stated.
> Authors often overlook the minor details.
Not quite. Quoted from http://php.net/language.operators.assignment (first
lines):
The basic assignment operator is "=". Your first inclination might be to
think of this as "equal to". Don't. It really means that the left operand
gets set to the value of the expression on the rights (that is, "gets set
to").
Feel free to read up on comparison operators as well:
http://php.net/language.operators.comparison
--
Kim André Akerø
- kimandre(at)NOSPAMbetadome(dot)com
(remove NOSPAM to contact me directly)
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