- A lot of fixes made again in this patch

src/EntityCollection.php

@@ -74,7 +74,7 @@ class EntityCollection extends \ArrayObject {
         return null;
     }
 
-    public function remove($value, string $field, bool $strict = true) : array
+    public function remove(/* mixed */ $values, string $field, bool $strict = true) : array
     {
         $removed = [];
 
@@ -89,7 +89,7 @@ class EntityCollection extends \ArrayObject {
 
     public function search($value, string $field, bool $strict = true) : Generator
     {
-        foreach($this->filters(fn($v) => $strict ? $v->$field === $value : $v->$field == $value) as $key => $item) {
+        foreach($this->filters(fn($v) => isset($v->$field) ? ( $strict ? $v->$field === $value : $v->$field == $value ) : false) as $key => $item) {
             yield $key => $item;
         }
     }
@@ -104,12 +104,31 @@ class EntityCollection extends \ArrayObject {
         return null;
     }
 
-    public function searchAll($value, string $field, bool $strict = true) : self
+    public function searchAll(/* mixed*/ $values, string $field, bool $strict = true, bool $compareArray = false) : self
     {
         $obj = new static();
 
-        foreach($this->search($value, $field, $strict) as $item) {
-            $obj->append($item);
+        $values = is_array($values) && $compareArray ? [ $values ] : $values;
+
+        foreach((array) $values as $value) {
+            foreach ($this->search($value, $field, $strict) as $item) {
+                $obj->append($item);
+            }
+        }
+
+        return $obj;
+    }
+
+    public function diffAll(/* mixed */ $values, string $field, bool $strict = true, bool $compareArray = false) : self
+    {
+        $obj = new static($this->getArrayCopy());
+
+        $values = is_array($values) && $compareArray ? [ $values ] : $values;
+
+        foreach((array) $values as $value) {
+            foreach($obj->search($value, $field, $strict) as $key => $item) {
+                $obj->offsetUnset($key);
+            }
         }
 
         return $obj;