Array_replace_recursive to values of single array

Question

I have a multidimensional array with an unknown structure and unknown number of items. I need to get a "flater" array compiled from particular keys, like in following example:

Input

$input = array(

    1 => array(
         'color' => 'blue',
         'haircut' => 'mullet',
         'satisfaction' => 'mild',
         'recursion' => array(...)
    ),

    2 => array(
         'color' => 'green',
         'haircut' => 'mushroom',
         'fashionable' => true,
         'recursion' => array(...)
    ),

    3 => array(
         'color' => 'yellow',
         'haircut' => 'beehive',
         'awkward' => false,
         'recursion' => array(...)
    ),
    
    ...
     
);

Output (merged array from above)

$output = array(
    'color' => 'yellow',
    'haircut' => 'beehive',
    'satisfaction' => 'mild',
    'fashionable' => true,
    'awkward' => false,
    'recursion' => array(...)
);

The ideal way, I think, would be to use array_replace_recursive($input[0],$input[1],$input[2], ...), right? The problem is I don't know the exact number of keys in $input array.

Is there any easy way how to achieve this? My guess would be to use each() function, but to be honest, I never really got that one.

Can you unwrap my head a little bit? Thank you in advance!

Ja͢ck · Accepted Answer · 2014-06-20 14:03:20Z

1

This is probably what you need:

$output = call_user_func_array('array_replace', $input);

It calls array_replace() whereby each element of $input is passed in as a separate function argument.

answered Jun 20, 2014 at 14:03

Ja͢ck

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