1

vendor/myclabs/deep-copy/src/DeepCopy/DeepCopy.php

@@ -7,6 +7,7 @@ use DateInterval;
 use DateTimeInterface;
 use DateTimeZone;
 use DeepCopy\Exception\CloneException;
+use DeepCopy\Filter\ChainableFilter;
 use DeepCopy\Filter\Filter;
 use DeepCopy\Matcher\Matcher;
 use DeepCopy\Reflection\ReflectionHelper;
@@ -223,6 +224,11 @@ class DeepCopy
             return;
         }
 
+        // Ignore readonly properties
+        if (method_exists($property, 'isReadOnly') && $property->isReadOnly()) {
+            return;
+        }
+
         // Apply the filters
         foreach ($this->filters as $item) {
             /** @var Matcher $matcher */
@@ -239,6 +245,10 @@ class DeepCopy
                     }
                 );
 
+                if ($filter instanceof ChainableFilter) {
+                    continue;
+                }
+
                 // If a filter matches, we stop processing this property
                 return;
             }

vendor/myclabs/deep-copy/src/DeepCopy/Filter/ChainableFilter.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace DeepCopy\Filter;
+
+/**
+ * Defines a decorator filter that will not stop the chain of filters.
+ */
+class ChainableFilter implements Filter
+{
+    /**
+     * @var Filter
+     */
+    protected $filter;
+
+    public function __construct(Filter $filter)
+    {
+        $this->filter = $filter;
+    }
+
+    public function apply($object, $property, $objectCopier)
+    {
+        $this->filter->apply($object, $property, $objectCopier);
+    }
+}