PHP: push variable number of elements to associative array

Question

A folder on my server holds a variable number of images. I'm working on a PHP script that is intended to retrieve the entire list of files there (a list of filenames) and create an associative array like so:

$list = array(1=>"image1.png", 2=>"image2.png", ...);

Basically, the list vector starts as empty and when a new image is found, its name has to be added to the list, with an incremented index: i=>"image[i].png"

How do I go about achieving this? Or in other words, how do I push a new element to my array?

Nanne · Accepted Answer · 2012-09-18 12:22:31Z

2

I'm not sure why you are referring to this as an associative-array, but if you want to add somethign to an array, do it like this

   $list = array();
   $list[] = "image1.png";
   $list[] = ....;
   $list[] = "imagei.png";

answered Sep 18, 2012 at 12:22

Nanne

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hsz · Accepted Answer · 2012-09-18 12:22:20Z

0

If you want to push new item to your array, try with:

$list[] = "image" + ( count($list) + 1 ) + ".png";

If your items' indexes starts with 1, add +1 in the name as described above. If you are starting from 0 as it is natural behaviour, skip it and use as described below:

 $list[] = "image" + count($list) + ".png";

answered Sep 18, 2012 at 12:22

hsz

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KingCrunch · Accepted Answer · 2012-09-18 12:26:07Z

0

So you are in fact re-implementing glob()?

$list = glob('/path/to/images/*.png');

If you are really want to reimplement it yourself

$i = 0;
$list = array();
while (file_exists('/path/to/image' . (++$i) . '.png'))
  $list[$i] = "image$i.png";

edited Sep 18, 2012 at 12:26

answered Sep 18, 2012 at 12:21

KingCrunch

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2 Comments

KingCrunch Over a year ago

@Matt No, php.net has a bad day. Just push F5 for a while ;)

Armel Larcier Over a year ago

add www... php.net is broken today

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