将字符串中的项目分成两个数组

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 usepreg_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"
}