I'm not sure what internal pointer they are talking about?
Is this pointer the symbols, brackets, etc.. that I see typed onto the page?
Here is what I'm talking about,

$fruits = array('APPLE', 'banana', 'cranberry');
echo end($fruits); // cranberry

?>

Yes, I know what an Array is.
That is not the problem. I also know what first and last means too. I've taken all the classes on calculus, Computers Concepts and Applications.
So, yes, Cranberry is the last item. So, yes, as you can see, I understand that.
apple is the first one, banana is the 2nd item.



I set the DVD/VCR to start recording and stop at a certain time all the time.
So, I know how to calculate things. Since I have to do that in order to have it stop about 7 minutes sometimes past when the show is due to end, in case of other things with the clock that maybe off a bit.




Also, sorry if I sound like I'm confused. I'm sick anyways all the time and just had Hepatitis A, and still dealing with affects from that which affects my memory and stress makes things worse too. I'm TRYING to get all the basic information about things in life all written down, so that in case I go into problems again where I don't even know how to spell my own name, I can look back at information for things.
So, yes, I've already learned all these topics years ago is what I'm trying to say, and got A's in the classes too. Which is why going out to take a class or something, which I can't physically do any of that due to my health being worse.

Thanks,
Amy







So what's the question?

The internal pointer is the item in the array which is currently being used.
See here: http://www.talkphp.com/vbarticles.php?do=article&articleid=41&title=using-the-internal-array-pointers-to-access-elements-in-arraysYes, so is the double slashes //
is that the internal pointer? Since Cranberry is typed there? Since it is being used.
Or is the internal pointer any of the quotes around the word Cranberry in the Array list above?
Or is it the parenthesees?
It's the item in the array. In your example the pointer is at cranberry.You can't see the internal pointer.

as you said, you understand what an array is. good.

so you have the array of strings in $fruits:

Code: [Select]$fruits = array('apple', 'banana', 'cranberry');

the Internal "pointer" is basically part of the array. you can't see it- you don't define it when you create the array- by default it "points" to the first element.

Various array functions change the "current" element being pointed at in the array. For example, the end() function you use:


Code: [Select]$fruits = array('apple', 'banana', 'cranberry');
echo end($fruits);

as you NOTE in the comment, it will give back "cranberry" since that is at the end of the array.

however, it also sets the "current" element (the internal pointer) to point at the last element of the array. if you tried to use the next() function on the fruits array, you wouldn't get anything in return:

Code: [Select]$fruits = array('apple', 'banana', 'cranberry');
echo end($fruits);
echo next($fruits);
would only echo "cranberry"; the second "next" function returns nothing- since the next() function returns the next item, and the internal pointer is at the end of the array already, there is no next item.





Quote from: BC_Programmer on June 30, 2010, 11:54:09 AM

You can't see the internal pointer.
the Internal "pointer" is basically part of the array. you can't see it- you don't define it when you create the array- by default it "points" to the first element.

Too bad I can't see the Internal pointer
I was hoping maybe I found something that might help to figure out what the guy who messed up all my files and stuff did.

Since the index file is suppose to be the default.

The 1st that happens by default.

See, I know he renamed the files

He was trying to help me back things up. Which the other thing is I keep trying to ask him, if renaming the files is what is suppose to happen, why did it work just fine for me when I backed things up without renaming the files. I can't get him to answer this question.

So, maybe we are already at the end of somewhere, and it can't get to the next item, since there is no next item. Unless since the index file is the 1st one and if it's been erased, then the 1st item is not there, so the next item can't work right and it's messing things up because of this. Since that 1st item needs to be there for things to execute/work properly.

What you posted was a segment of PHP code. it has absolutely 0 to do with anything that anybody would have done on your PC at any point in time.

I'll take your word for that I suppose. although I'm not sure when rules about PHP arrays became applicable to files.
right (?)

you do? did you watch him rename the files or do you have psychic powers, or what made you "know" this?

the end of somewhere? next item? index file? you asked about PHP arrays because you gave a segment of PHP. that has absolutely nothing to do with files or indexes or your local machine whatsoever, and certainly it has zero relevance to what you claim to be a vigilante "repairman" going around renaming peoples files.