Arrange $_POST to multidimensional array in PHP - php

Question

I have an form when submitting the form and if print $_POST i will get the output like the following
[type] =>'new',
[class] =>'10',
[div] =>c,
[id_228] => 228,
[title_228]=> First,
[colour_228]=> red,
[id_229] => 229,
[title_229]=> second,
[colour_229]=> blue,
[id_230] => 230,
[title_230]=> third,
[colour_230]=> yellow,
[id_231] => 231,
[title_231]=> fourth,
[colour_231]=> orange,
etc
now i have to store this output to an result array . Please see the result array
result_array[1]=array("Title", 'Color')
so in this result array i have to add $_POST like this
result_array[228]=array("First","red")
result_array[229]=array("Second","blue")
result_array[230]=array("Third","yellow")
result_array[231]=array("Fourth","red")
Please help .

Answer 1

First step should be creating a proper looking array out of this data:
https://3v4l.org/r0HZ9
$post = [
'id_228' => 228,
'title_228' => "First",
'colour_228' => 'red',
'id_229' => 228,
'title_229' => "Second",
'colour_229' => 'blue'];
// Transform data into a proper format
$resultArray = [];
foreach($post as $key => $val) {
$key = explode('_',$key);
$resultArray[$key[1]][$key[0]] = $val;
}
// Now do whatever you want to do
var_dump($resultArray);
Now you could add more logic... If you want the data in your proposed format you could do
$result = [];
foreach($resultArray as $item) {
$result[] = [$item['title'], $item['colour']];
}
https://3v4l.org/WC2B0
EDIT:
Since you added
[type] =>'new',
[class] =>'10',
[div] =>c,
you might want to create a list of allowed fields that should be added, maybe something like:
// Transform data into a proper format
$resultArray = [];
$allowedFields = ['id', 'title', 'colour'];
foreach($post as $key => $val) {
$key = explode('_',$key);
if(in_array($key[0], $allowedFields)) {
$resultArray[$key[1]][$key[0]] = $val;
}
}
https://3v4l.org/NQGfa

Answer 2

You'll have to just loop it and prepare a new array.
$result = array();
foreach ($_POST as $key => $value) {
list($title, $key) = explode('_', $key);
if (!is_array($result[$key])) $result[$key] = array();
$result[$key][$title] = $value;
}
var_dump($result);
Hope this helps.

Answer 3

$arr= ["id_228" => 228, "title_228" => "First",
"colour_228"=> "red",
"id_229" => 229,
"title_229"=> "second",
"colour_229"=> "blue",
"id_230" => 230,
"title_230"=> "third",
"colour_230"=> "yellow",
"id_231" => 231,
"title_231"=> "fourth",
"colour_231"=> "orange" ];
foreach($arr as $key => $value) {
$d = explode( '_', $key );
if(true == is_numeric( $value)) {
continue;
}
$c[$d[1]][]= $value ;
}
print_r($c);
Out put
Array
(
[228] => Array
(
[0] => First
[1] => red
)
[229] => Array
(
[0] => second
[1] => blue
)
[230] => Array
(
[0] => third
[1] => yellow
)
[231] => Array
(
[0] => fourth
[1] => orange
)
)