Changed negated in (!in) to nin

See https://github.com/json-path/JsonPath#filter-operators

Author: SoftCreatR

README.md

@@ -107,13 +107,13 @@ Script expressions are not supported as the original author intended because:
 
 So here are the types of query expressions that are supported:
 
-	[?(@._KEY_ _OPERATOR_ _VALUE_)] // <, >, !=, ==, in and !in
+	[?(@._KEY_ _OPERATOR_ _VALUE_)] // <, >, !=, ==, in and nin
 	Eg.
 	[?(@.title == "A string")] //
 	[?(@.title = "A string")]
 	// A single equals is not an assignment but the SQL-style of '=='
 	[?(@.title in ["A string", "Another string"])]
-	[?(@.title !in ["A string", "Another string"])]
+	[?(@.title nin ["A string", "Another string"])]
 
 Known issues
 ------

src/Filters/QueryMatchFilter.php

@@ -20,7 +20,7 @@ class QueryMatchFilter extends AbstractFilter
 {
     public const MATCH_QUERY_OPERATORS = '
       @(\.(?<key>[^ =]+)|\[["\']?(?<keySquare>.*?)["\']?\])
-      (\s*(?<operator>==|=|<>|!==|!=|>|<|in|!in)\s*(?<comparisonValue>.+))?
+      (\s*(?<operator>==|=|<>|!==|!=|>|<|in|nin)\s*(?<comparisonValue>.+))?
     ';
 
     /**
@@ -101,7 +101,7 @@ public function filter($collection): array
                     $return[] = $value;
                 }
 
-                if ($operator === '!in' && is_array($comparisonValue) && !in_array($value1, $comparisonValue, true)) {
+                if ($operator === 'nin' && is_array($comparisonValue) && !in_array($value1, $comparisonValue, true)) {
                     $return[] = $value;
                 }
             }

tests/JSONPathTest.php

@@ -277,14 +277,14 @@ public function testQueryMatchIn(): void
     }
 
     /**
-     * $..books[?(@.author not in ["J. R. R. Tolkien", "Nigel Rees"])]
+     * $..books[?(@.author nin ["J. R. R. Tolkien", "Nigel Rees"])]
      * Filter books that don't have a title in ["...", "..."]
      *
      * @throws Exception
      */
     public function testQueryMatchNotIn(): void
     {
-        $result = (new JSONPath($this->exampleData(random_int(0, 1))))->find('$..books[?(@.author !in ["J. R. R. Tolkien", "Nigel Rees"])].title');
+        $result = (new JSONPath($this->exampleData(random_int(0, 1))))->find('$..books[?(@.author nin ["J. R. R. Tolkien", "Nigel Rees"])].title');
 
         self::assertEquals(['Sword of Honour', 'Moby Dick'], $result->getData());
     }