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[HttpFoundation] Don't reorder nested query string keys #26214

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[HttpFoundation] Don't reorder nested query string keys #26214

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8 changes: 4 additions & 4 deletions src/Symfony/Component/HttpFoundation/Request.php
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Original file line number Diff line number Diff line change
Expand Up @@ -660,6 +660,7 @@ public static function normalizeQueryString($qs)

$parts = array();
$order = array();
$index = 0;

foreach (explode('&', $qs) as $param) {
if ('' === $param || '=' === $param[0]) {
Expand All @@ -670,14 +671,13 @@ public static function normalizeQueryString($qs)
}

$keyValuePair = explode('=', $param, 2);
$key = urldecode($keyValuePair[0]);

// GET parameters, that are submitted from a HTML form, encode spaces as "+" by default (as defined in enctype application/x-www-form-urlencoded).
// PHP also converts "+" to spaces when filling the global _GET or when using the function parse_str. This is why we use urldecode and then normalize to
// RFC 3986 with rawurlencode.
$parts[] = isset($keyValuePair[1]) ?
rawurlencode(urldecode($keyValuePair[0])).'='.rawurlencode(urldecode($keyValuePair[1])) :
rawurlencode(urldecode($keyValuePair[0]));
$order[] = urldecode($keyValuePair[0]);
$parts[] = rawurlencode($key).(isset($keyValuePair[1]) ? '='.rawurlencode(urldecode($keyValuePair[1])) : '');
$order[] = false !== ($i = strpos($key, '[')) ? substr_replace($key, pack('N', ++$index), 1 + $i) : $key;
}

array_multisort($order, SORT_ASC, $parts);
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4 changes: 4 additions & 0 deletions src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
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Expand Up @@ -658,6 +658,10 @@ public function getQueryStringNormalizationData()
// Ignore pairs with empty key, even if there was a value, e.g. "=value", as such nameless values cannot be retrieved anyway.
// PHP also does not include them when building _GET.
array('foo=bar&=a=b&=x=y', 'foo=bar', 'removes params with empty key'),

// Don't reorder nested query string keys
array('foo[]=Z&foo[]=A', 'foo%5B%5D=Z&foo%5B%5D=A', 'keeps values order'),
array('foo[Z]=B&foo[A]=B', 'foo%5BZ%5D=B&foo%5BA%5D=B', 'keeps keys order'),
);
}

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