PHP - Accessing array element within the same array

Question

Having an array, I want to call a value giving a key within the same array!
In my following example, I have tried to call a particular value giving the key 'default' within the same array, but without success! Is it possible to do that in PHP? Here is my array:

$inc_folders = array(
         'default' => "def_folder",
         'file'     => $inc_folders['default'] . "/textfile.txt" 
    );

calling the value in $inc_folders['file'], I would want the result be the following: "def_folder/textfile.txt"; but I obtain an error!

Please, can you help me to resolve that?
Many thanks!

Levi Morrison · Accepted Answer · 2014-05-12 19:23:01Z

5

You need to assign it to a variable first; like so:

$folder = "def_folder";
$inc_folders = array(
    'default' => $folder,
    'file'     => $folder . "/textfile.txt" 
);

Or alternatively, build the array in two steps:

$inc_folders = array(
    'default' => "def_folder"
);

$inc_folders['file'] = $inc_folders['default'] . "/textfile.txt";

answered May 12, 2014 at 19:23

Levi Morrison

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Ejaz · Accepted Answer · 2014-05-12 19:23:54Z

1

like this

$inc_folders = array(
    'default' => "def_folder"
);

$inc_folders['file']= $inc_folders['default'] . "/textfile.txt";

answered May 12, 2014 at 19:23

Ejaz

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Comments

AbraCadaver · Accepted Answer · 2014-05-12 19:25:25Z

0

Here is another way, just not how you are currently trying:

$inc_folders['default'] = "def_folder";
$inc_folders['file']    = $inc_folders['default'] . "/textfile.txt";

answered May 12, 2014 at 19:25

AbraCadaver

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