PHP arrays combine values of the right key - php

Question

I have a question about arrays in PHP:
I have many zip files having many data inside and using preg_grep I could get the results below:
(These data are returned from multiple text files in the zip file)
=> Array
(
[ZipName] => data.zip
[Age] => 45
)
=> Array
(
[ZipName] => data.zip
[Name] => John
)
=> Array
(
[ZipName] => data2.zip
)
=> Array
(
[ZipName] => data1.zip
[Age] => 25
)
=> Array
(
[ZipName] => data2.zip
[Age] => 27
)
=> Array
(
[ZipName] => data1.zip
[Name] => Abram
)
=> Array
(
[ZipName] => data1.zip
)
=> Array
(
[ZipName] => data2.zip
[City] => London
)
=> Array
(
[ZipName] => data2.zip
[Name] => Inna
)
=> Array
(
[ZipName] => data1.zip
[City] => London
)
So how I can combine/merge all of these arrays using the ZipName Value !
Like in SQL it easy :
SELECT * FROM * WHERE ZipName= 'x';
0 => Array
(
[ZipName] => data.zip
[Age] => 45
[Name] => John
[City] => Leicester
)
1 => Array
(
[ZipName] => data1.zip
[Age] => 25
[Name] => Abram
[City] => London
)
2 => Array
(
[ZipName] => data2.zip
[Age] => 27
[Name] => Inna
[City] => London
)

Answer 1

An alternative to using array_merge, array_combine etc.. ...is just two simple foreach loops and setting the value into a new array ($new_arr).
$new_arr = [];
foreach($arr as $inner_arr) {
foreach($inner_arr as $key=>$value) {
$new_arr[$key] = $value;
}
}
UPDATE
I was not clear what OP wanted but I hope it's clearer now:
Try this:
(Basically adding values to array[name of ZipName][{current key for the inner array}]
$arr = [
[
'ZipName' => 'data.zip',
'Age' => '45'
],
[
'ZipName' => 'data.zip',
'Name' => 'John'
],
[
'ZipName' => 'data2.zip',
'Age' => '27'
],
[
'ZipName' => 'data1.zip',
'Name' => 'Abram'
],
[
'ZipName' => 'data1.zip'
],
[
'ZipName' => 'data2.zip',
'City' => 'London'
],
[
'ZipName' => 'data2.zip',
'Name' => 'Inna'
],
[
'ZipName' => 'data1.zip',
'City' => 'London'
]
];
$new_arr = [];
foreach($arr as $key => $inner_arr) {
foreach($inner_arr as $ik => $item) {
$new_arr[$inner_arr['ZipName']][$ik] = $item;
}
}
Output:
Array
(
[data.zip] => Array
(
[ZipName] => data.zip
[Age] => 45
[Name] => John
)
[data2.zip] => Array
(
[ZipName] => data2.zip
[Age] => 27
[City] => London
[Name] => Inna
)
[data1.zip] => Array
(
[ZipName] => data1.zip
[Name] => Abram
[City] => London
)
)
When doing:
$new_arr = array_values($new_arr);
the key simply gets do be a numeric index (if it matters)
Array
(
[0] => Array
(
[ZipName] => data.zip
[Age] => 45
[Name] => John
)
[1] => Array
(
[ZipName] => data2.zip
[Age] => 27
[City] => London
[Name] => Inna
)
[2] => Array
(
[ZipName] => data1.zip
[Name] => Abram
[City] => London
)
)

Answer 2

What you need is to group by the unique values at the index ['ZipName'] and then merge those groups individually. This can be done with array_reduce.
Example:
<?php
declare(strict_types=1);
$input = [
[
'ZipName' => 'data_1.zip',
'Age' => 45,
], [
'ZipName' => 'data_1.zip',
'Name' => 'John',
], [
'ZipName' => 'data_1.zip',
], [
'ZipName' => 'data_1.zip',
'City' => 'Leicester',
],
[
'ZipName' => 'data_2.zip',
'Age' => 45,
], [
'ZipName' => 'data_2.zip',
'Name' => 'John',
], [
'ZipName' => 'data_2.zip',
], [
'ZipName' => 'data_2.zip',
'City' => 'Leicester',
],
];
$output = array_values(array_reduce($input, static function (array $acc, array $item): array {
$acc[$item['ZipName']] = array_merge($acc[$item['ZipName']] ?? [], $item);
return $acc;
}, []));
print_r($output);

Answer 3

I think you are going to combine different arrays, So please use array merge.
$array0 = Array
(
"ZipName" => data.zip,
"Age" => 45
);
$array1 = Array
(
"ZipName" => data.zip,
"Name" => John
);
$array2 = Array
(
"ZipName" => data.zip
);
$array3 = Array
(
"ZipName" => data.zip,
"City" => Leicester
);
print_r(array_merge($array0, $array1, $array2, $array3));
Out Put:
Array ( [ZipName] => datazip
[Age] => 45
[Name] => John
[City] => Leicester )