I'm trying to create a new array containing values from pre-existing arrays.
<?php
$array1 = array(
0 => 101,
1 => 102,
2 => 121,
3 => 231,
4 => 232,
5 => 233
);
$array2 = array(
0 => 58,
1 => 98,
2 => 45,
3 => 48,
4 => 45,
5 => 85
);
$result = array();
Notice that the first element is from $array1, second element from $array2 and so on.
Any pointer is highly appreciated.
Example of how you can achieve this:
$array = array(4,5,6);
$array2 = array(8,9,0,12,44,);
$count1 = count($array);
$count2 = count($array2);
$count = ($count1 > $count2) ? $count1 : $count2;
$rez = array();
for ($i = 0; $i < $count; $i++) {
if ($i < $count1) {
$rez[] = $array[$i];
}
if ($i < $count2) {
$rez[] = $array2[$i];
}
}
var_dump($rez);
Result will be an array
array(8) {
[0]=>
int(4)
[1]=>
int(8)
[2]=>
int(5)
[3]=>
int(9)
[4]=>
int(6)
[5]=>
int(0)
[6]=>
int(12)
[7]=>
int(44)
}
but if you need to save empty values you can remove
this checks if ($i < $count2)
You can try with for or foreach loops (in case $array1 and $array2 have the same number of elements with the same indexes):
$result = array();
for($i = 0; $i < count($array1); $i++){
$result[] = $array1[$i];
$result[] = $array2[$i];
}
[] gives you a feature to not specify the index, so you can just push them one by one from each array to the result array.
There is also a more straightforward way to do it, without worrying about lost indexes and elements :
$i = 0;
foreach($array1 as $v){
$result[$i] = $v;
$i = $i+2;
}
$i = 1;
foreach($array2 as $v){
$result[$i] = $v;
$i = $i+2;
}
ksort($result);
It looks a bit cumbersome, so you can write a function to make it more elegant :
function build_array(&$array, $input, $counter){
foreach($input as $v){
$array[$counter] = $v;
$counter = $counter+2;
}
}
build_array($result, $array1, 0);
build_array($result, $array2, 1);
ksort($result);