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Fix lexicographic multi-key sorting (#356)

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Fabian
2026-07-31 06:11:17 +01:00
committed by GitHub
parent fd9e9fa3cb
commit c5c178f214
2 changed files with 132 additions and 38 deletions
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GameEngine/Multisort.php
+48 -38
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@@ -30,57 +30,67 @@ class multiSort
{
$args = func_get_args();
$array = $args[0];
$criteria = array();
// iterate key/order/type triplets
// Collect key/order/type triplets in their declared priority order.
for ($i = 1; $i < count($args); $i += 3)
{
$key = isset($args[$i]) ? $args[$i] : null;
$order = isset($args[$i + 1]) ? $args[$i + 1] : true; // true = ASC
$type = isset($args[$i + 2]) ? $args[$i + 2] : 0;
if ($key === null) {
continue;
if ($key !== null) {
$criteria[] = array($key, $order, $type);
}
// comparator
$cmp = function ($a, $b) use ($key, $type, $order)
{
$va = isset($a[$key]) ? $a[$key] : null;
$vb = isset($b[$key]) ? $b[$key] : null;
switch ($type)
{
case 1: // Case insensitive natural
$result = strnatcasecmp($va, $vb);
break;
case 2: // Numeric
$result = ($va == $vb) ? 0 : (($va < $vb) ? -1 : 1);
break;
case 3: // Case sensitive string
$result = strcmp((string)$va, (string)$vb);
break;
case 4: // Case insensitive string
$result = strcasecmp((string)$va, (string)$vb);
break;
default: // Case sensitive natural
$result = strnatcmp((string)$va, (string)$vb);
break;
}
return $order ? $result : -$result;
};
usort($array, $cmp);
}
if (!count($criteria)) {
return $array;
}
usort($array, function ($a, $b) use ($criteria) {
foreach ($criteria as $criterion) {
list($key, $order, $type) = $criterion;
$va = isset($a[$key]) ? $a[$key] : null;
$vb = isset($b[$key]) ? $b[$key] : null;
$result = $this->compareValues($va, $vb, $type);
if ($result !== 0) {
return $order ? $result : -$result;
}
}
return 0;
});
return $array;
}
/**
* Compare two values using the sort type expected by sorte().
*/
private function compareValues($a, $b, $type)
{
switch ($type)
{
case 1: // Case insensitive natural
return strnatcasecmp((string)$a, (string)$b);
case 2: // Numeric
return ($a == $b) ? 0 : (($a < $b) ? -1 : 1);
case 3: // Case sensitive string
return strcmp((string)$a, (string)$b);
case 4: // Case insensitive string
return strcasecmp((string)$a, (string)$b);
default: // Case sensitive natural
return strnatcmp((string)$a, (string)$b);
}
}
}
$multisort = new multiSort();
?>
?>