Separate items in a string into two arrays - php

Question

How can I split this string into two arrays in PHP? The string may have many items in it.
$str = "20x9999,24x65,40x5";
I need to get two arrays from this string:
$array1 = array(20,24,40);
$array2 = array(9999,65,5);
I've tried many implementations of preg_split, slice, regex. I can't get it done... I need help!

Answer 1

You can explode the string by commas, and then explode each of those values by x, inserting the result values from that into the two arrays:
$str = "20x9999,24x65,40x5";
$array1 = array();
$array2 = array();
foreach (explode(',', $str) as $xy) {
list($x, $y) = explode('x', $xy);
$array1[] = $x;
$array2[] = $y;
}
Alternatively, you can use preg_match_all, matching against the digits either side of the x:
preg_match_all('/(\d+)x(\d+)/', $str, $matches);
$array1 = $matches[1];
$array2 = $matches[2];
In both cases the output is:
Array
(
[0] => 20
[1] => 24
[2] => 40
)
Array
(
[0] => 9999
[1] => 65
[2] => 5
)
Demo on 3v4l.org

Answer 2

I guess with preg_split, we could do so:
$str = '20x9999,24x65,40x5';
$array1 = $array2 = array();
foreach (preg_split("/,/", $str, -1, PREG_SPLIT_NO_EMPTY) as $key => $value) {
$val = preg_split("/x/", $value, -1, PREG_SPLIT_NO_EMPTY);
array_push($array1, $val[0]);
array_push($array2, $val[1]);
}
var_dump($array1);
var_dump($array2);
Output
array(3) {
[0]=>
string(2) "20"
[1]=>
string(2) "24"
[2]=>
string(2) "40"
}
array(3) {
[0]=>
string(4) "9999"
[1]=>
string(2) "65"
[2]=>
string(1) "5"
}