TalkPHP - View Single Post - how to get the last child in an array and set last child to it.

Wildhoney · 06-27-2009, 03:57 PM

Well, you could do that, but those functions: end, reset, prev, next, all modify the position of the internal pointer.

For instance:

php Code:

$aFruit = array('Orange', 'Apple', 'Pear');
$szLast = end($aFruit);
echo current($aFruit);

Whilst we do have the last child there in our variable, the current function shows us that the internal pointer has been moved to the last element.

Please take a look at my article on an internal pointers here: http://www.talkphp.com/vbarticles.ph...ents-in-arrays

So, how to get the last child without modifying the internal pointer? Well, we could do the following, which would work in a similar way to Python's:

php Code:

$aFruit = array('Orange', 'Apple', 'Pear');
$szLast = $aFruit[count($aFruit) - 1];
echo $szLast;

The minus one (-1) being necessary because count doesn't start at zero, whereas array keys do.

06-27-2009, 03:57 PM	#2 (permalink)
Wildhoney La Vida es Sueño Join Date: Sep 2007 Location: Oldham Posts: 2,215 Thanks: 90	Well, you could do that, but those functions: `end`, `reset`, `prev`, `next`, all modify the position of the internal pointer. For instance: php Code: $aFruit = array('Orange', 'Apple', 'Pear'); $szLast = end($aFruit); echo current($aFruit); Whilst we do have the last child there in our variable, the `current` function shows us that the internal pointer has been moved to the last element. Please take a look at my article on an internal pointers here: http://www.talkphp.com/vbarticles.ph...ents-in-arrays So, how to get the last child without modifying the internal pointer? Well, we could do the following, which would work in a similar way to Python's: php Code: $aFruit = array('Orange', 'Apple', 'Pear'); $szLast = $aFruit[count($aFruit) - 1]; echo $szLast; The minus one (-1) being necessary because count doesn't start at zero, whereas array keys do. __________________ The man who comes back through the Door in the Wall will never be quite the same as the man who went out.