Fix PHP contains queries

Author: abnegate

templates/php/src/Query.php.twig

@@ -262,7 +262,7 @@ class Query implements \JsonSerializable
      * @param string $value
      * @return string
      */
-    public static function contains(string $attribute, string $value): string
+    public static function contains(string $attribute, array $value): string
     {
         return (new Query('contains', $attribute, $value))->__toString();
     }

tests/languages/php/test.php

@@ -139,8 +139,8 @@
 echo Query::cursorBefore('my_movie_id') . "\n";
 echo Query::limit(50) . "\n";
 echo Query::offset(20) . "\n";
-echo Query::contains('title', 'Spider') . "\n";
-echo Query::contains('labels', 'first') . "\n";
+echo Query::contains('title', ['Spider']) . "\n";
+echo Query::contains('labels', ['first']) . "\n";
 echo Query::or([
     Query::equal('released', [true]),
     Query::lessThan('releasedYear', 1990)