Fixed MATCH_QUERY_OPERATORS

Author: SoftCreatR

README.md

@@ -3,7 +3,7 @@ JSONPath for PHP 7.1+
 
 [![Build Status](https://img.shields.io/github/workflow/status/SoftCreatR/JSONPath/Test/main?label=Build%20Status)](https://github.com/SoftCreatR/JSONPath/actions?query=workflow%3ATest)
 [![Latest Release](https://img.shields.io/packagist/v/SoftCreatR/JSONPath?color=blue&label=Latest%20Release)](https://packagist.org/packages/softcreatr/jsonpath)
-[![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](./LICENSE.txt)
+[![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](./LICENSE)
 [![Codecov branch](https://img.shields.io/codecov/c/github/SoftCreatR/JSONPath/main)](https://codecov.io/gh/SoftCreatR/JSONPath/)
 
 This is a [JSONPath](http://goessner.net/articles/JsonPath/) implementation for PHP based on Stefan Goessner's JSONPath script.

src/Filters/QueryMatchFilter.php

@@ -9,8 +9,8 @@
 
 namespace Flow\JSONPath\Filters;
 
-use RuntimeException;
 use Flow\JSONPath\AccessHelper;
+use RuntimeException;
 use function is_string;
 use function preg_match;
 use function preg_replace;
@@ -19,7 +19,7 @@
 class QueryMatchFilter extends AbstractFilter
 {
     public const MATCH_QUERY_OPERATORS = '
-      @(\.(?<key>[^ =]+)|\[["\']?(?<keySquare>.*?)["\']?\])
+      @(\.(?<key>[^\s<>!=]+)|\[["\']?(?<keySquare>.*?)["\']?\])
       (\s*(?<operator>==|=|<>|!==|!=|>=|<=|>|<|in|!in|nin)\s*(?<comparisonValue>.+))?
     ';
 
@@ -29,8 +29,6 @@ class QueryMatchFilter extends AbstractFilter
      */
     public function filter($collection): array
     {
-        $return = [];
-
         preg_match('/^' . static::MATCH_QUERY_OPERATORS . '$/x', $this->token->value, $matches);
 
         if (!isset($matches[1])) {
@@ -67,6 +65,8 @@ public function filter($collection): array
             }
         }
 
+        $return = [];
+
         foreach ($collection as $value) {
             if (AccessHelper::keyExists($value, $key, $this->magicIsAllowed)) {
                 $value1 = AccessHelper::getValue($value, $key, $this->magicIsAllowed);