Build an array from 3 arrays with PHP - php

Question

I've some problem to construct an array.
Array A:
Array
(
[0] => 2015-09-13
[1] => 2015-09-14
[2] => 2015-09-15
[3] => 2015-09-16
[4] => 2015-09-17
[5] => 2015-09-18
[6] => 2015-09-19
)
Array B:
Array
(
[0] => 1
[1] => 8
)
Array C:
Array
(
[0] => Leaves-19
[1] => Shifts-18
[2] => Shifts-18
[3] => Shifts-18
[4] => Shifts-18
[5] => Shifts-18
[6] => Leaves-19
[7] => Leaves-19
[8] => Shifts-12
[9] => Shifts-12
[10] => Shifts-12
[11] => Shifts-12
[12] => Shifts-12
[13] => Leaves-19
)
Desired final output:
Array
(
[0] => 2015-09-13|1|Leaves-19
[1] => 2015-09-14|1|Shifts-18
[2] => 2015-09-15|1|Shifts-18
[3] => 2015-09-16|1|Shifts-18
[4] => 2015-09-17|1|Shifts-18
[5] => 2015-09-18|1|Shifts-18
[6] => 2015-09-19|1|Leaves-19
[7] => 2015-09-13|8|Leaves-19
[8] => 2015-09-14|8|Shifts-12
[9] => 2015-09-15|8|Shifts-12
[10] => 2015-09-16|8|Shifts-12
[11] => 2015-09-17|8|Shifts-12
[12] => 2015-09-18|8|Shifts-12
[13] => 2015-09-19|8|Leaves-19
)
I'm lost in for and foreach.
Here's the logic:
1st parameter is a date and it come's form array B. It is repeat
after 6 entries.
2nd parameter is the user id. It changes after 6 entries and pass to the next id.
3rd parameter is an entry of array B.
Oter informations:
The arrays don't have the same length.
Array A, counts 6 entries.
Array B, counts a random entries.
Array C, is Array A x 2.
I already tried to make a for for my array B and after a foreach in array A, but it wasn't functional.
I do not know where I need to start.
Hope I will have any help or cue.
Thanks a lot.

Answer 1

you can use modulus operator
$OutputArray = Array();
for($i=0; $i < max(count($a1),count($a2),count($a3)); $i++){
array_push($OutputArray, $a1[ $i % count($a1) ] . "|" .
$a2[ $i % count($a2) ] . "|" . $a3[ $i % count($a3) ]);
}
print_r($OutputArray);
you get:
Array
(
[0] => 2015-09-13|1|Leaves-19
[1] => 2015-09-14|8|Shifts-18
[2] => 2015-09-15|1|Shifts-18
[3] => 2015-09-16|8|Shifts-18
[4] => 2015-09-17|1|Shifts-18
[5] => 2015-09-18|8|Shifts-18
[6] => 2015-09-19|1|Leaves-19
[7] => 2015-09-13|8|Leaves-19
[8] => 2015-09-14|1|Shifts-12
[9] => 2015-09-15|8|Shifts-12
[10] => 2015-09-16|1|Shifts-12
[11] => 2015-09-17|8|Shifts-12
[12] => 2015-09-18|1|Shifts-12
[13] => 2015-09-19|8|Leaves-19
)
if you want in order (expected):
$OutputArray = Array();
$max = max(count($a1),count($a2),count($a3));
for($i=0; $i < $max; $i++){
array_push($OutputArray, $a1[$i%count($a1)] . "|" .
$a2[ $i*count($a2) / $max ] . "|" . $a3[$i%count($a3)]);
}
print_r($OutputArray);
you get:
Array
(
[0] => 2015-09-13|1|Leaves-19
[1] => 2015-09-14|1|Shifts-18
[2] => 2015-09-15|1|Shifts-18
[3] => 2015-09-16|1|Shifts-18
[4] => 2015-09-17|1|Shifts-18
[5] => 2015-09-18|1|Shifts-18
[6] => 2015-09-19|1|Leaves-19
[7] => 2015-09-13|8|Leaves-19
[8] => 2015-09-14|8|Shifts-12
[9] => 2015-09-15|8|Shifts-12
[10] => 2015-09-16|8|Shifts-12
[11] => 2015-09-17|8|Shifts-12
[12] => 2015-09-18|8|Shifts-12
[13] => 2015-09-19|8|Leaves-19
)

Answer 2

Try this, it iterates over the biggest array and condition the counting of the minor ones to its desired listing behavior.
<?php
$arrA = ['2015-09-13','2015-09-14','2015-09-15','2015-09-16',
'2015-09-17','2015-09-18','2015-09-19'];
$arrB = [1,8];
$arrC = ['Leaves-19','Shifts-18','Shifts-18','Shifts-18','Shifts-18','Shifts-18',
'Leaves-19','Leaves-19','Shifts-12','Shifts-12','Shifts-12','Shifts-12','Shifts-12',
'Leaves-19'];
$a = $b = 0;
for ($c = 0; $c < count($arrC); $c++) {
$arrC[$c] = $arrA[$a].'|'.$arrB[$b].'|'.$arrC[$c];
$a++;
if ($a == count($arrA)) {
$a = 0;
$b++;
}
};
echo "<pre>";
print_r($arrC);
OUTPUT:
Array
(
[0] => 2015-09-13|1|Leaves-19
[1] => 2015-09-14|1|Shifts-18
[2] => 2015-09-15|1|Shifts-18
[3] => 2015-09-16|1|Shifts-18
[4] => 2015-09-17|1|Shifts-18
[5] => 2015-09-18|1|Shifts-18
[6] => 2015-09-19|1|Leaves-19
[7] => 2015-09-13|8|Leaves-19
[8] => 2015-09-14|8|Shifts-12
[9] => 2015-09-15|8|Shifts-12
[10] => 2015-09-16|8|Shifts-12
[11] => 2015-09-17|8|Shifts-12
[12] => 2015-09-18|8|Shifts-12
[13] => 2015-09-19|8|Leaves-19
)

Answer 3

My version:
$arrayA = array('2015-09-13','2015-09-14','2015-09-15','2015-09-16','2015-09-17','2015-09-18','2015-09-19');
$arrayB = array(1,8);
$arrayC = array('Leaves-19','Leaves-18','Leaves-17','Leaves-16','Leaves-15','Leaves-14','Leaves-13','Leaves-12','Leaves-11','Leaves-10','Leaves-9','Leaves-8','Leaves-7','leaves-6');
$output = array();
$count = 0;
foreach($arrayB as $arrayBElement){
foreach($arrayA as $arrayAElement){
$output[] = $arrayC[$count] . '|' . $arrayAElement . '|' . $arrayBElement;
$count++;
}
}
var_dump($output);
E: removed erroneous count

Answer 4

This stinks of a homework problem so I'm going to answer in pseudocode so hopefully you can apply some hints and come to the solution yourself.
It appears that maybe Array B ([1,8]) is a list of indexes at which to start printing out the next index. Your own statement (2nd parameter is the user id. It changes after 6 entries and pass to the next id.) is not accurate based on your desired final output:
[6] => 2015-09-19|1|Leaves-19
[7] => 2015-09-13|8|Leaves-19
This moves to the next id at index 7 (count 8) not index 6 (count 7, or one after 6 entries).
So My pseudo solution would be this:
Create a new array by repeating Array A until it matches the length of Array C
Append Array B to Array A by finding the element of Array B that is equal to or less than (1+index):
0 => '1', 1 => '1' ... 7 => '8'
Concatenate Array C to every array with index parity (eg. newArray[ 0 ] . ArrayC[ 0 ])
This gives you the final output you desire.

Answer 5

try this code, I have named your 3 arrays as $arrA, $arrB and $arrC
$arrA = Array(
'2015-09-13',
'2015-09-14',
'2015-09-15',
'2015-09-16',
'2015-09-17',
'2015-09-18',
'2015-09-19'
);
$arrB = array(1,8);
$arrC = array(
'Leaves-19',
'Shifts-18',
'Shifts-18',
'Shifts-18',
'Shifts-18',
'Shifts-18',
'Leaves-19',
'Leaves-19',
'Shifts-12',
'Shifts-12',
'Shifts-12',
'Shifts-12',
'Shifts-12',
'Leaves-19'
);
$output = array();
$indx = 0;
foreach($arrB as $b){
foreach($arrA as $a){
$output[] = $a.'|'.$b.'|'.$arrC[$indx];
$indx++;/*new line addded*/
}
//$indx++;/*remove this line from here*/
}
echo "<pre>";
print_r($output);
echo "</pre>";

Answer 6

With different sizes try guess maxlength
//Create arrays
var Adates= ["2015-09-13", "2015-09-14", "2015-09-15"];
var Bnums= ["1", "2", "3"];
var Cnums= ["Leaves-19", "Shifts-18", "Shifts-18"];
//get size
var maxLenght=0;
if(Adates.length>maxLenght) maxLenght=Adates.length;
if(Bnums.length>maxLenght) maxLenght=Bnums.length;
if(Cnums.length>maxLenght) maxLenght=Cnums.length;
//merge and populate
var OutputArray;
for (i = 0; i < maxLenght; i++) {
OutputArray[i]=Adates[i]+"|"+Bnums[i]+"|"+Cnums[i];
}