Create new array based on unique keys - php

Question

I am struggling with an array that I need to convert into a new array based on the unique array keys. My current result looks like below. Each array represent just a part of the desired result (pivot) where I need a [menu_name], [menu_url] and [menu_target] as result and when the next array begins with the same keys, etc. So the way I see it to achieve this is to construct a new array, each time an array_key_exist in the array. But i am unable to achieve this.
Array
(
Array
(
[menu_name] => Contact
)
Array
(
[menu_url] => /contact
)
Array
(
[menu_target] => _blank
)
Array
(
[menu_name] => Home
)
Array
(
[menu_url] => /home
)
Array
(
[menu_target] => _self
)
)
The desired array I want to create looks like this:
Array
(
[0] => Array
(
[menu_name] => Contact,
[menu_url] => /contact,
[menu_target] => _blank
)
[1] => Array
(
[menu_name] => Home,
[menu_url] => /home,
[menu_target] => _blank
)
)
Here is my code so far (incomplete):
$result = array();
foreach($array as $option => $value)
{
$result[$value->option_key] = $value->option_value;
$new_array = array();
if(array_key_exist($value->option_key, $new_array))
{
// here is where I get stuck….
print_r($new_array);
}
}
I hope some one can get me in the right direction to further complete the code with the desired result.

Answer 1

You can use a var you increment each time key already exists :
$result = array();
$i = 0;
foreach($array as $option => $value)
{
if ( array_key_exists($value->option_key, $result[$i]) ) $i++;
$result[$i][$value->option_key] = $value->option_value;
}

Answer 2

Another way, is if the current batch of keys are complete, go to the next one and fill up the next one. Example:
$values = array(array('menu_name' => 'Contact'),array('menu_url' => '/contact'),array('menu_target' => '_blank'),array('menu_name' => 'Home'),array('menu_url' => '/home'),array('menu_target' => '_self'),);
$new_values = array();
$x = 0;
$columns = array_unique(array_map(function($var){
return key($var);
}, $values));
foreach($values as $value) {
$current_key = key($value);
$new_values[$x][$current_key] = reset($value);
if(array_keys($new_values[$x]) == $columns) $x++;
}
echo '<pre>';
print_r($new_values);
Sample Demo

Answer 3

Provided your answer is always grouped by threes, as posted in your example.
This is an alternative method to djidi's answer incase you wanted to see it done with silly loops.
$new = array_chunk($a, 3);
$d = array();
foreach($new as $i => $group) {
foreach($group as $index => $item) {
foreach($item as $name=>$val) {
$d[$i][$name] = $val;
}
}
}
Which returns:
Array
(
[0] => Array
(
[menu_name] => Contact
[menu_url] => /contact
[menu_target] => _blank
)
[1] => Array
(
[menu_name] => Home
[menu_url] => /home
[menu_target] => _self
)
)
Example Demo