Create multidimensional array from array

[seanrom]

Hello

I am stuck on a function I need to create in order to manage my cache from a custom admin panel. Can anyone of you think of a possible way to create a function that will create a multidimensional array from an array with values separated by dots. Because I certainly cannot after trying 3 hours.

It's hard to explain what i mean but perhaps this will make you understand more:

Array
(
    [0] => ragephp.config.website
    [1] => ragephp.config.server
    [2] => ragephp.stats
    [3] => rageweb.locale.page-index
    [4] => rageweb.locale.page-register
    [5] => ragezone
)

Would look something like this when it has been "translated":

Array
(
    [ragephp] => Array
        (
            [config] => Array
                (
                    [website] => 
                    [server] => 
                )

            [stats] => 
        )

    [rageweb] => Array
        (
            [locale] => Array
                (
                    [page-index] => 
                    [page-register] => 
                )

        )

    [ragezone] => 
)

 

[Joopie]

<?php

	function test($input)
	{
  $array = array();
  
  foreach ($input as $value)
  {
   $depth =& $array;
   $keys = explode('.', $value);
   foreach ($keys as $key)
   {
    $depth =& $depth[$key];
   }
  }
  
  return $array;
	}
	
	var_dump(test(array(
  'ragephp.config.website',
  'ragephp.config.server',
  'ragephp.stats',
  'rageweb.locale.page-index',
  'rageweb.locale.page-register',
  'ragezone'
	)));

 

[seanrom]

<?php

	function test($input)
	{
  $array = array();
  
  foreach ($input as $value)
  {
   $depth =& $array;
   $keys = explode('.', $value);
   foreach ($keys as $key)
   {
    $depth =& $depth[$key];
   }
  }
  
  return $array;
	}
	
	var_dump(test(array(
  'ragephp.config.website',
  'ragephp.config.server',
  'ragephp.stats',
  'rageweb.locale.page-index',
  'rageweb.locale.page-register',
  'ragezone'
	)));

Any way to change it to array values instead of keys?

 

[Joopie]

Any way to change it to array values instead of keys?

<?php

    function test($input)
    {
  $array = array();
  
  foreach ($input as $value)
  {
   $depth =& $array;
   $keys = explode('.', $value);
   $value = array_pop($keys);
   foreach ($keys as $key)
   {
    $depth =& $depth[$key];
   }
   
   $depth[] = $value;
  }
  
  return $array;
    }

Would be the clousest result.

 

[seanrom]

<?php

	function test($input)
	{
  $array = array();
  
  foreach ($input as $value)
  {
   $depth =& $array;
   $keys = explode('.', $value);
   foreach ($keys as $key)
   {
    $depth =& $depth[$key];
   }
  }
  
  return $array;
	}
	
	var_dump(test(array(
  'ragephp.config.website',
  'ragephp.config.server',
  'ragephp.stats',
  'rageweb.locale.page-index',
  'rageweb.locale.page-register',
  'ragezone'
	)));

Would you mind to explain what is going on here? Joopie

 

[Joopie]

Would you mind to explain what is going on here? @Joopie

$array holds the new created array
$input are the string values to be converted

for each $value in $input you create a fresh reference $depth to $array.
So $depth is a pointer to the variable $array

The keys you want are seperated with a ".", hence the explode to get an array of those keys.

Looping over all those keys, and just make a new reference and override the old one.

For example: "ragephp.config.website" you get the keys (ragephp, config, website).
And the loop will be as followed:

$depth points to $array
$depth[ragephp] (which points to $array[ragephp]) overrides $depth
$depth[config] (which points to $array[ragephp][config]) overrides $depth
$depth[website] (which points to $array[ragephp][config][website]) overrides $depth
And so on.