Fixes regression, Allow callbacks to be a FilterInterface again.

Signed-off-by: Pieter Hoste <[email protected]>

src/FilterChain.php

@@ -87,7 +87,7 @@ public function setOptions($options)
                     foreach ($value as $spec) {
                         $callback = $spec['callback'] ?? false;
                         $priority = $spec['priority'] ?? static::DEFAULT_PRIORITY;
-                        if (is_callable($callback)) {
+                        if (is_callable($callback) || $callback instanceof FilterInterface) {
                             $this->attach($callback, $priority);
                         }
                     }

test/FilterChainTest.php

@@ -10,6 +10,7 @@
 use Laminas\Filter\StringToLower;
 use Laminas\Filter\StringTrim;
 use Laminas\Filter\StripTags;
+use LaminasTest\Filter\TestAsset\StrRepeatFilterInterface;
 use PHPUnit\Framework\Attributes\Group;
 use PHPUnit\Framework\TestCase;
 
@@ -77,7 +78,7 @@ public function testAllowsConfiguringFilters(): void
         $chain  = new FilterChain();
         $chain->setOptions($config);
         $value         = '<a name="foo"> abc </a><img id="bar" />';
-        $valueExpected = 'ABC <IMG ID="BAR" />';
+        $valueExpected = 'ABC <IMG ID="BAR" />ABC <IMG ID="BAR" />';
         self::assertSame($valueExpected, $chain->filter($value));
     }
 
@@ -86,7 +87,7 @@ public function testAllowsConfiguringFiltersViaConstructor(): void
         $config        = $this->getChainConfig();
         $chain         = new FilterChain($config);
         $value         = '<a name="foo"> abc </a>';
-        $valueExpected = 'ABC';
+        $valueExpected = 'ABCABC';
         self::assertSame($valueExpected, $chain->filter($value));
     }
 
@@ -96,7 +97,7 @@ public function testConfigurationAllowsTraversableObjects(): void
         $config        = new ArrayIterator($config);
         $chain         = new FilterChain($config);
         $value         = '<a name="foo"> abc </a>';
-        $valueExpected = 'ABC';
+        $valueExpected = 'ABCABC';
         self::assertSame($valueExpected, $chain->filter($value));
     }
 
@@ -117,6 +118,7 @@ private function getChainConfig(): array
         return [
             'callbacks' => [
                 ['callback' => [self::class, 'staticUcaseFilter']],
+                ['callback' => new StrRepeatFilterInterface()],
                 [
                     'priority' => 10000,
                     'callback' => static fn(string $value): string => trim($value),

test/TestAsset/StrRepeatFilterInterface.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace LaminasTest\Filter\TestAsset;
+
+use Laminas\Filter\FilterInterface;
+
+class StrRepeatFilterInterface implements FilterInterface
+{
+    public function filter($value)
+    {
+        return str_repeat((string) $value, 2);
+    }
+}