How to convert flattened array to multidimensional array in PHP
I am trying to convert array key values to multidimensional array. Key values appear to be multidimensional, but are just plain text. I tried to hack a string and create a new array, but I feel like there must be something simpler than just this.
See example below:
Array (
[Template[URL]] => http://www.asdasdda.com
[Template[UPC]] => 5484548546314
[Field[value]] => Test Example
[Field[answer]] => 20 )
All help is very handy. :)
UPDATE: This is the exact output of the data before I ran json_decode on the data.
{"Template[URL]":"http://www.asdasdda.com","Template[UPC]":"5484548546314","Field[value]":"Test Example","Field[answer]":"20"}
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Hid a little and I think I got it. I don't think there is an easier way:
foreach ($array as $key=>$value) {
preg_match("/\[(.+)\]/",$key,$match);
$newKey = preg_replace("/\[.+\]/","",$key);
$newArray[$newKey][$match[1]] = $value;
}
Where a print_r()
of $newArray
looks like this:
Array (
[Template] => Array (
[URL] => http://www.asdasdda.com
[UPC] => 5484548546314
)
[Field] => Array (
[value] => Test Example
[answer] => 20
)
)
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Probably the problem should be addressed where the array is created. If you don't have access to this, you can use a support loop regex to convert the array:
$array = [
"Template[URL]" => 'http://www.asdasdda.com',
"Template[UPC]" => '5484548546314',
"Multi[Level][Array]" => 'Hello World'
];
function convert(&$array, $key, $value) {
preg_match_all("/(?=^)[^]]+(?=\[)|(?<=\[)[^]]+(?=\])/", $key, $keys);
if ($keys = $keys[0]) {
// Unset original key
unset($array[$key]);
// Dig into each level of keys and reassign the reference
foreach($keys as $key) {
if (!isset($array[$key])) $array[$key] = null;
$array = &$array[$key];
}
// Set the final level equal to the original value
$array = $value;
}
}
foreach($array as $key=>$value) {
convert($array, $key, $value);
}
print_r($array);
Outputs:
Array
(
[Template] => Array
(
[URL] => http://www.asdasdda.com
[UPC] => 5484548546314
)
[Multi] => Array
(
[Level] => Array
(
[Array] => Hello World
)
)
)
Links are used so you can dig up multiple levels if you need to.
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