How to convert a associative array in to simple array in php

Question

Array
(
    [340] => Array(
            [0] => 341
        )
    [228] => Array(
            [0] => 234
            [1] => 239
        )
    [343] => Array (
            [0] => 344
            [1] => 345
        )
)

desired out put

array(
[0] => 340
[1] => 341
[2] => 228
[3] => 234
[4] => 239
[5] => 343
[6] => 344
[7] => 345
)

I am trying to use recursive function to get the output I have tried with a php code but not able to get desired output

$simple_array = get_exam_preference_list_array($list);
function get_exam_preference_list_array($list, $list_array = array()){
            foreach($list as $key=>$pref_list){
                $list_array[]  = $key;  
                if(is_array($pref_list)){

                    get_exam_preference_list_array(array_flip($pref_list), $list_array);
                }
            }
            return $list_array;
}

Please help

prasanth · Accepted Answer · 2020-03-28 04:51:33Z

1

You forget to merge the recursive call function

Codesandbox Demo

function get_exam_preference_list_array($list, $list_array = array()){
            foreach($list as $key=>$pref_list){
                $list_array[]  = $key; 
                if(is_array($pref_list)){
                   $list_array = array_merge(get_exam_preference_list_array(array_flip($pref_list)),$list_array);
                }
            }
            return $list_array;
}

answered Mar 28, 2020 at 4:51

prasanth

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Comments

Apps Maven · Accepted Answer · 2020-03-30 05:14:29Z

0

$input_array;           // This is your input array
$output_array = [];     // This is where your output will be stored.
foreach ($input_array as $k => $v)
{
array_push($output_array, $v);
}
print_r($output_array);

answered Mar 30, 2020 at 5:14

Apps Maven

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1 Comment

Jason Aller Over a year ago

Code only answers can almost always be improved by adding some explanation of how and why they work.

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