Convert Multi dimensional array to Single array in PHP - php

Question

Request your help on how to convert the below array as a single array, I tried all these methods:
array_column($testarray, "Name") ,
array_merge($array, , $testarray),
array_map('current', $$testarray[0])
but nothing seem to be working. Basically I need to passes the array value as a string using implode("','", Name) so that the array value would be like below
T : 'Name1','Name2'
D : 'Name11','Name21'
P : 'Name111','Name211'
Original Array
Array
(
[T] => Array
(
[0] => Array
(
[Name] => Name1
)
[1] => Array
(
[Name] => Name2
)
)
[D] => Array
(
[0] => Array
(
[Name] => Name11
)
[1] => Array
(
[Name] => Name21
)
)
[P] => Array
(
[0] => Array
(
[Name] => Name111
)
[1] => Array
(
[Name] => Name211
)
)
)
Expected Array
T:
Name: Name1
Name2
D:
Name: Name11
Name21
P:
Name: Name111
Name211
From,
Vino

Answer 1

try this one
function array_flatten($array) {
if (!is_array($array)) {
return FALSE;
}
$result = array();
foreach ($array as $key => $value) {
if (is_array($value)) {
$result = array_merge($result, array_flatten($value));
}
else {
$result[$key] = $value;
}
}
return $result;
}

Answer 2

You can flatten your array using array_map and array_column:
$newarr = array_map(function ($v) { return array_column($v, 'Name'); }, $array);
print_r($newarr);
This gives:
Array
(
[T] => Array
(
[0] => Name1
[1] => Name2
)
[D] => Array
(
[0] => Name11
[1] => Name21
)
[P] => Array
(
[0] => Name111
[1] => Name211
)
)
You can then output the key with each array imploded for your string result:
foreach ($newarr as $key => $arr) {
echo "$key: " . implode(',', $arr) . "\n";
}
Output:
T: Name1,Name2
D: Name11,Name21
P: Name111,Name211
Demo on 3v4l.org

Answer 3

$arr = [
'T' => [['Name' => 'Name1'], ['Name' => 'Name2']],
'D' => [['Name' => 'Name11'], ['Name' => 'Name11']],
'P' => [['Name' => 'Name111'], ['Name' => 'Name211']]
];
array_walk($arr,function(&$v, $k){
$v = ['Name' => array_column($v, 'Name')];
});
print_r($arr);
OUTPUT:
Array
(
[T] => Array
(
[Name] => Array
(
[0] => Name1
[1] => Name2
)
)
[D] => Array
(
[Name] => Array
(
[0] => Name11
[1] => Name11
)
)
[P] => Array
(
[Name] => Array
(
[0] => Name111
[1] => Name211
)
)
)