3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "11111*1; 22222*1; 33333*1; 44444*1"; $array = explode('; ', $string); $new = []; foreach($array as $k => $v){ $parts = explode('*', $v); $new[] = [ 'sku' => $parts[0], 'qty' => $parts[1], ]; } echo json_encode($new, JSON_PRETTY_PRINT); // JSON_PRETTY_PRINT is just for displaying it nicely here
Output for 7.1.25 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
[ { "sku": "11111", "qty": "1" }, { "sku": "22222", "qty": "1" }, { "sku": "33333", "qty": "1" }, { "sku": "44444", "qty": "1" } ]

preferences:
162.23 ms | 403 KiB | 182 Q