bug #39358 [HttpFoundation] fix parsing some special chars with Heade…

…rUtils::parseQuery() (nicolas-grekas)

This PR was merged into the 5.2 branch.

Discussion
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[HttpFoundation] fix parsing some special chars with HeaderUtils::parseQuery()

| Q             | A
| ------------- | ---
| Branch?       | 5.2
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | Fix #39307
| License       | MIT
| Doc PR        | -

Same as #39357 for 5.2

Commits
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8682bdc [HttpFoundation] fix parsing some special chars with HeaderUtils::parseQuery()

src/Symfony/Component/HttpFoundation/HeaderUtils.php

@@ -228,7 +228,7 @@ public static function parseQuery(string $query, bool $ignoreBrackets = false, s
             if (false === $i = strpos($k, '[')) {
                 $q[] = bin2hex($k).$v;
             } else {
-                $q[] = substr_replace($k, bin2hex(substr($k, 0, $i)), 0, $i).$v;
+                $q[] = bin2hex(substr($k, 0, $i)).rawurlencode(substr($k, $i)).$v;
             }
         }
 

src/Symfony/Component/HttpFoundation/Tests/HeaderUtilsTest.php

@@ -151,6 +151,7 @@ public function provideParseQuery()
             ['a[b]=c', 'a%5Bb%5D=c'],
             ['a[b][c.d]=c', 'a%5Bb%5D%5Bc.d%5D=c'],
             ['a%5Bb%5D=c'],
+            ['f[%2525][%26][%3D][p.c]=d', 'f%5B%2525%5D%5B%26%5D%5B%3D%5D%5Bp.c%5D=d'],
         ];
     }