OK, thanks everyone.


(BTW -I actually meant to say 'var $varName;' in PHP and 'var varName;' in 
JavaScript -doh!)



Anyway, my question has been thoroughly answered, and I completely 
understand now.



I did try the "var $varName;" outside a class, just to see what happened, 
and found out it does indeed throw a parse error, so I'll just use a comment 
as Mr. Rasmus suggested. I wonder why "Beginning PHP 5 and MySQL from Novice 
to Professional by W. Jason Gilmore" says to declare them? I guess he just 
meant by assigning a value like: $varName = Null or something. I just have 
to get used to this new way of "declaring" -lol.



And thanks especially Ryan. That is a very informational answer, and gives 
me a much deeper insight into why PHP doesn't allow an actual definition, 
than any other resource/explanation I have ever seen! Thank you VERY much 
for taking the time to write that, I am the kind of person who wants to 
completely understand a subject (not just "how", but, "why" as well), and 
now I completely understand this particular part of PHP.



-Jon






"Ryan Faricy" <[EMAIL PROTECTED]> wrote in message 
news:[EMAIL PROTECTED]
>
> "Jon M." <[EMAIL PROTECTED]> wrote in message 
> news:[EMAIL PROTECTED]
>>I know it's not necessary, but I still want to know how.
>>
>>
>> I know in JavaScript, that you declare vars like so:
>>
>> var = variableName;
>>
>> So I'm assuming that in PHP you do it like this:
>>
>> var = $variableName;
>>
>> But there doesn't seem to be a single shred of documentation on PHP.net 
>> (or in ANY book) that covers this. All they say is that it's good 
>> practice, but not necessary. Then they always skip telling you how.
>>
>> I always like to declare vars since it helps me keep track of the vars I 
>> will be using, and I just like to do things right.
>>
>> So am I right about how you do it? "Yes", "No", example please??
>>
>>
>> -Jon
>
> It is good practice to define your variables (i.e., set them to 0, or 
> empty, etc) at the beginning of a script, for security and reliability 
> reasons.
>
> With PHP however, there technically is no definition of variables as in 
> other languages such as Java or BASIC. To define a variable in PHP simply 
> requires a $variableName = ''; or $variableName = 0; or $variableName = 
> empty; etc etc. A variable is defined as soon as a value is set for it, 
> therefore to define a variable, simply give it a value. 

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