making new arrays in 1 multidimensional array on looping statement codeigniter - php

Question

guys lets play in multidimensional array little bit :p
lets said i have $filter which it contain multidimensional array :
array(2) {
["time"]=>
array(3) {
[0]=>
string(1) "1"
[1]=>
string(1) "2"
[2]=>
string(1) "3"
}
["people"]=>
array(5) {
[0]=>
string(1) "1"
[1]=>
string(1) "2"
[2]=>
string(1) "3"
[3]=>
string(1) "4"
[4]=>
string(1) "5"
}
}
from the array it should be return :
array(3) {
["time"]=>
string(1) "1"
["people"]=>
string(1) "1"
["promo_id"]=>
string(1) "1"
}
array(3) {
["time"]=>
string(1) "1"
["people"]=>
string(1) "2"
["promo_id"]=>
string(1) "1"
}
array(3) {
["time"]=>
string(1) "1"
["people"]=>
string(1) "3"
["promo_id"]=>
string(1) "1"
}
array(3) {
["time"]=>
string(1) "1"
["people"]=>
string(1) "4"
["promo_id"]=>
string(1) "1"
}
array(3) {
["time"]=>
string(1) "1"
["people"]=>
string(1) "5"
["promo_id"]=>
string(1) "1"
}
array(3) {
["time"]=>
string(1) "2"
["people"]=>
string(1) "1"
["promo_id"]=>
string(1) "1"
}
array(3) {
["time"]=>
string(1) "2"
["people"]=>
string(1) "2"
["promo_id"]=>
string(1) "1"
}
array(3) {
["time"]=>
string(1) "2"
["people"]=>
string(1) "3"
["promo_id"]=>
string(1) "1"
}
array(3) {
["time"]=>
string(1) "2"
["people"]=>
string(1) "4"
["promo_id"]=>
string(1) "1"
}
array(3) {
["time"]=>
string(1) "2"
["people"]=>
string(1) "5"
["promo_id"]=>
string(1) "1"
}
array(3) {
["time"]=>
string(1) "3"
["people"]=>
string(1) "1"
["promo_id"]=>
string(1) "1"
}
array(3) {
["time"]=>
string(1) "3"
["people"]=>
string(1) "2"
["promo_id"]=>
string(1) "1"
}
array(3) {
["time"]=>
string(1) "3"
["people"]=>
string(1) "3"
["promo_id"]=>
string(1) "1"
}
array(3) {
["time"]=>
string(1) "3"
["people"]=>
string(1) "4"
["promo_id"]=>
string(1) "1"
}
array(3) {
["time"]=>
string(1) "3"
["people"]=>
string(1) "5"
["promo_id"]=>
string(1) "1"
}
actually i could get that result with this following code :
foreach ($filter['time'] as $row){
foreach ($filter['people'] as $item){
$new_array['time'] = $row;
$new_array['people'] = $item;
$new_array['promo_id'] = $promo_id;
vd($new_array,"new");
}
}
but i cant use that following code, because it using $filter['time'] and $filter['people'], how about if the time or people is a random string?
so can you show me guys, to looping it from $filter?
as like this :
foreach ($filter as $key => $row){
}
thank you (:

Answer 1

function combination($arr,$res,$completed_key){
$array_key = array_keys($arr);
$last_array_key = array_pop($array_key);
$start = false;
$temp = $res;
$res=array();
$i=0;
foreach($arr as $key=>$row){
if(!in_array($key,$completed_key)&& $start==false){
array_push($completed_key,$key);
$start=true;
}
if($start){
if(count($temp)==0){
foreach($row as $key2 => $row2){
$res[][$key]=$row2;
}
}else{
foreach($temp as $temp_key=>$temp_row){
foreach($row as $key2 => $row2){
$res[$i]=$temp_row;
$res[$i][$key]=$row2;
$i++;
}
}
}
}
if($start){
break;
}
}
if(!in_array($last_array_key,$completed_key)){
return $this->combination($arr,$res,$completed_key,$debugger);
}else{
return $res;
}
}
This function will return you want.
$filter["time"]=array(1,2,3);
$filter["people"]=array(1,2);
$filter["size"]=array("a","b");
$res=$this->combination($filter,array(),array());
I'll explain later.