Fix php8.2 deprecation: strpos():

 -  Passing null to parameter laravel#1 ($haystack) of type string is deprecated

Author: tivvie

src/Illuminate/Routing/UrlGenerator.php

@@ -608,7 +608,10 @@ public function formatParameters($parameters)
      */
     protected function extractQueryString($path)
     {
-        if (($queryPosition = strpos($path, '?')) !== false) {
+        if (
+            $path !== null
+            && ($queryPosition = strpos($path, '?')) !== false
+        ) {
             return [
                 substr($path, 0, $queryPosition),
                 substr($path, $queryPosition),

tests/Routing/RoutingUrlGeneratorTest.php

@@ -56,6 +56,7 @@ public function testQueryGeneration()
         $this->assertSame('http://www.foo.com/foo/bar', $url->query('foo/bar?baz=boom', ['baz' => null]));
         $this->assertSame('https://www.foo.com/foo/bar/baz?foo=bar&zal=bee', $url->query('foo/bar?foo=bar', ['zal' => 'bee'], ['baz'], true));
         $this->assertSame('http://www.foo.com/foo/bar?baz[0]=boom&baz[1]=bam&baz[2]=bim', urldecode($url->query('foo/bar', ['baz' => ['boom', 'bam', 'bim']])));
+        $this->assertSame('http://www.foo.com', urldecode($url->query(null)));
     }
 
     public function testAssetGeneration()