diff --git a/composer.json b/composer.json
index 331cb205..ac8a38e2 100644
--- a/composer.json
+++ b/composer.json
@@ -44,7 +44,10 @@
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         "equalizedigital/accessibility-checker-wp-env": "*",
         "doctrine/instantiator": "^1.3.1",
-        "wp-phpunit/wp-phpunit": "*"
+        "wp-phpunit/wp-phpunit": "*",
+        "phpstan/phpstan": "^1.11",
+		"phpstan/extension-installer": "^1.4",
+        "szepeviktor/phpstan-wordpress": "^1.3"
     },
     "require": {
         "davechild/textstatistics": "dev-master",
@@ -75,4 +78,4 @@
             "@php ./vendor/phpunit/phpunit/phpunit --testdox"
         ]
     }
-}
\ No newline at end of file
+}
diff --git a/composer.lock b/composer.lock
index 869bb246..ee4aac6f 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
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         "This file is @generated automatically"
     ],
-    "content-hash": "0caaadc5141a41eab988c89fbe33dc1f",
+    "content-hash": "a274098ef7ca61355b37a265e3bf525f",
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             "name": "composer/installers",
@@ -697,16 +697,16 @@
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-            "version": "1.11.1",
+            "version": "1.12.0",
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                 "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "7284c22080590fb39f2ffa3e9057f10a4ddd0e0c"
+                "reference": "3a6b9a42cd8f8771bd4295d13e1423fa7f3d942c"
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-                "reference": "7284c22080590fb39f2ffa3e9057f10a4ddd0e0c",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/3a6b9a42cd8f8771bd4295d13e1423fa7f3d942c",
+                "reference": "3a6b9a42cd8f8771bd4295d13e1423fa7f3d942c",
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@@ -714,11 +714,12 @@
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-                "doctrine/common": "<2.13.3 || >=3,<3.2.2"
+                "doctrine/common": "<2.13.3 || >=3 <3.2.2"
             },
             "require-dev": {
                 "doctrine/collections": "^1.6.8",
                 "doctrine/common": "^2.13.3 || ^3.2.2",
+                "phpspec/prophecy": "^1.10",
                 "phpunit/phpunit": "^7.5.20 || ^8.5.23 || ^9.5.13"
             },
             "type": "library",
@@ -744,7 +745,7 @@
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             "support": {
                 "issues": "https://github.com/myclabs/DeepCopy/issues",
-                "source": "https://github.com/myclabs/DeepCopy/tree/1.11.1"
+                "source": "https://github.com/myclabs/DeepCopy/tree/1.12.0"
             },
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@@ -752,20 +753,20 @@
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                 }
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-            "time": "2023-03-08T13:26:56+00:00"
+            "time": "2024-06-12T14:39:25+00:00"
         },
         {
             "name": "nikic/php-parser",
-            "version": "v5.0.2",
+            "version": "v5.1.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/nikic/PHP-Parser.git",
-                "reference": "139676794dc1e9231bf7bcd123cfc0c99182cb13"
+                "reference": "683130c2ff8c2739f4822ff7ac5c873ec529abd1"
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-                "url": "https://api.github.com/repos/nikic/PHP-Parser/zipball/139676794dc1e9231bf7bcd123cfc0c99182cb13",
-                "reference": "139676794dc1e9231bf7bcd123cfc0c99182cb13",
+                "url": "https://api.github.com/repos/nikic/PHP-Parser/zipball/683130c2ff8c2739f4822ff7ac5c873ec529abd1",
+                "reference": "683130c2ff8c2739f4822ff7ac5c873ec529abd1",
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@@ -776,7 +777,7 @@
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             "require-dev": {
                 "ircmaxell/php-yacc": "^0.0.7",
-                "phpunit/phpunit": "^7.0 || ^8.0 || ^9.0"
+                "phpunit/phpunit": "^9.0"
             },
             "bin": [
                 "bin/php-parse"
@@ -808,9 +809,9 @@
             ],
             "support": {
                 "issues": "https://github.com/nikic/PHP-Parser/issues",
-                "source": "https://github.com/nikic/PHP-Parser/tree/v5.0.2"
+                "source": "https://github.com/nikic/PHP-Parser/tree/v5.1.0"
             },
-            "time": "2024-03-05T20:51:40+00:00"
+            "time": "2024-07-01T20:03:41+00:00"
         },
         {
             "name": "phar-io/manifest",
@@ -991,6 +992,53 @@
             },
             "time": "2024-03-27T12:14:49+00:00"
         },
+        {
+            "name": "php-stubs/wordpress-stubs",
+            "version": "v6.5.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-stubs/wordpress-stubs.git",
+                "reference": "e611a83292d02055a25f83291a98fadd0c21e092"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-stubs/wordpress-stubs/zipball/e611a83292d02055a25f83291a98fadd0c21e092",
+                "reference": "e611a83292d02055a25f83291a98fadd0c21e092",
+                "shasum": ""
+            },
+            "require-dev": {
+                "dealerdirect/phpcodesniffer-composer-installer": "^1.0",
+                "nikic/php-parser": "^4.13",
+                "php": "^7.4 || ~8.0.0",
+                "php-stubs/generator": "^0.8.3",
+                "phpdocumentor/reflection-docblock": "5.3",
+                "phpstan/phpstan": "^1.10.49",
+                "phpunit/phpunit": "^9.5",
+                "szepeviktor/phpcs-psr-12-neutron-hybrid-ruleset": "^0.11"
+            },
+            "suggest": {
+                "paragonie/sodium_compat": "Pure PHP implementation of libsodium",
+                "symfony/polyfill-php80": "Symfony polyfill backporting some PHP 8.0+ features to lower PHP versions",
+                "szepeviktor/phpstan-wordpress": "WordPress extensions for PHPStan"
+            },
+            "type": "library",
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "WordPress function and class declaration stubs for static analysis.",
+            "homepage": "https://github.com/php-stubs/wordpress-stubs",
+            "keywords": [
+                "PHPStan",
+                "static analysis",
+                "wordpress"
+            ],
+            "support": {
+                "issues": "https://github.com/php-stubs/wordpress-stubs/issues",
+                "source": "https://github.com/php-stubs/wordpress-stubs/tree/v6.5.3"
+            },
+            "time": "2024-05-08T02:12:31+00:00"
+        },
         {
             "name": "phpcompatibility/php-compatibility",
             "version": "9.3.5",
@@ -1361,6 +1409,108 @@
             ],
             "time": "2024-05-20T13:34:27+00:00"
         },
+        {
+            "name": "phpstan/extension-installer",
+            "version": "1.4.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpstan/extension-installer.git",
+                "reference": "f6b87faf9fc7978eab2f7919a8760bc9f58f9203"
+            },
+            "dist": {
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+                "url": "https://api.github.com/repos/phpstan/extension-installer/zipball/f6b87faf9fc7978eab2f7919a8760bc9f58f9203",
+                "reference": "f6b87faf9fc7978eab2f7919a8760bc9f58f9203",
+                "shasum": ""
+            },
+            "require": {
+                "composer-plugin-api": "^2.0",
+                "php": "^7.2 || ^8.0",
+                "phpstan/phpstan": "^1.9.0"
+            },
+            "require-dev": {
+                "composer/composer": "^2.0",
+                "php-parallel-lint/php-parallel-lint": "^1.2.0",
+                "phpstan/phpstan-strict-rules": "^0.11 || ^0.12 || ^1.0"
+            },
+            "type": "composer-plugin",
+            "extra": {
+                "class": "PHPStan\\ExtensionInstaller\\Plugin"
+            },
+            "autoload": {
+                "psr-4": {
+                    "PHPStan\\ExtensionInstaller\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "Composer plugin for automatic installation of PHPStan extensions",
+            "support": {
+                "issues": "https://github.com/phpstan/extension-installer/issues",
+                "source": "https://github.com/phpstan/extension-installer/tree/1.4.1"
+            },
+            "time": "2024-06-10T08:20:49+00:00"
+        },
+        {
+            "name": "phpstan/phpstan",
+            "version": "1.11.7",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpstan/phpstan.git",
+                "reference": "52d2bbfdcae7f895915629e4694e9497d0f8e28d"
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+                "reference": "52d2bbfdcae7f895915629e4694e9497d0f8e28d",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2|^8.0"
+            },
+            "conflict": {
+                "phpstan/phpstan-shim": "*"
+            },
+            "bin": [
+                "phpstan",
+                "phpstan.phar"
+            ],
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "PHPStan - PHP Static Analysis Tool",
+            "keywords": [
+                "dev",
+                "static analysis"
+            ],
+            "support": {
+                "docs": "https://phpstan.org/user-guide/getting-started",
+                "forum": "https://github.com/phpstan/phpstan/discussions",
+                "issues": "https://github.com/phpstan/phpstan/issues",
+                "security": "https://github.com/phpstan/phpstan/security/policy",
+                "source": "https://github.com/phpstan/phpstan-src"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/ondrejmirtes",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/phpstan",
+                    "type": "github"
+                }
+            ],
+            "time": "2024-07-06T11:17:41+00:00"
+        },
         {
             "name": "phpunit/php-code-coverage",
             "version": "9.2.31",
@@ -1682,45 +1832,45 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "9.6.19",
+            "version": "9.6.20",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "a1a54a473501ef4cdeaae4e06891674114d79db8"
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-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/a1a54a473501ef4cdeaae4e06891674114d79db8",
-                "reference": "a1a54a473501ef4cdeaae4e06891674114d79db8",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/49d7820565836236411f5dc002d16dd689cde42f",
+                "reference": "49d7820565836236411f5dc002d16dd689cde42f",
                 "shasum": ""
             },
             "require": {
-                "doctrine/instantiator": "^1.3.1 || ^2",
+                "doctrine/instantiator": "^1.5.0 || ^2",
                 "ext-dom": "*",
                 "ext-json": "*",
                 "ext-libxml": "*",
                 "ext-mbstring": "*",
                 "ext-xml": "*",
                 "ext-xmlwriter": "*",
-                "myclabs/deep-copy": "^1.10.1",
-                "phar-io/manifest": "^2.0.3",
-                "phar-io/version": "^3.0.2",
+                "myclabs/deep-copy": "^1.12.0",
+                "phar-io/manifest": "^2.0.4",
+                "phar-io/version": "^3.2.1",
                 "php": ">=7.3",
-                "phpunit/php-code-coverage": "^9.2.28",
-                "phpunit/php-file-iterator": "^3.0.5",
+                "phpunit/php-code-coverage": "^9.2.31",
+                "phpunit/php-file-iterator": "^3.0.6",
                 "phpunit/php-invoker": "^3.1.1",
-                "phpunit/php-text-template": "^2.0.3",
-                "phpunit/php-timer": "^5.0.2",
-                "sebastian/cli-parser": "^1.0.1",
-                "sebastian/code-unit": "^1.0.6",
+                "phpunit/php-text-template": "^2.0.4",
+                "phpunit/php-timer": "^5.0.3",
+                "sebastian/cli-parser": "^1.0.2",
+                "sebastian/code-unit": "^1.0.8",
                 "sebastian/comparator": "^4.0.8",
-                "sebastian/diff": "^4.0.3",
-                "sebastian/environment": "^5.1.3",
-                "sebastian/exporter": "^4.0.5",
-                "sebastian/global-state": "^5.0.1",
-                "sebastian/object-enumerator": "^4.0.3",
-                "sebastian/resource-operations": "^3.0.3",
-                "sebastian/type": "^3.2",
+                "sebastian/diff": "^4.0.6",
+                "sebastian/environment": "^5.1.5",
+                "sebastian/exporter": "^4.0.6",
+                "sebastian/global-state": "^5.0.7",
+                "sebastian/object-enumerator": "^4.0.4",
+                "sebastian/resource-operations": "^3.0.4",
+                "sebastian/type": "^3.2.1",
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@@ -1765,7 +1915,7 @@
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                 "security": "https://github.com/sebastianbergmann/phpunit/security/policy",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.19"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.20"
             },
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                 {
@@ -1781,7 +1931,7 @@
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-            "time": "2024-04-05T04:35:58+00:00"
+            "time": "2024-07-10T11:45:39+00:00"
         },
         {
             "name": "sebastian/cli-parser",
@@ -2748,16 +2898,16 @@
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         {
             "name": "sirbrillig/phpcs-variable-analysis",
-            "version": "v2.11.18",
+            "version": "v2.11.19",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sirbrillig/phpcs-variable-analysis.git",
-                "reference": "ca242a0b7309e0f9d1f73b236e04ecf4ca3248d0"
+                "reference": "bc8d7e30e2005bce5c59018b7cdb08e9fb45c0d1"
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-                "reference": "ca242a0b7309e0f9d1f73b236e04ecf4ca3248d0",
+                "url": "https://api.github.com/repos/sirbrillig/phpcs-variable-analysis/zipball/bc8d7e30e2005bce5c59018b7cdb08e9fb45c0d1",
+                "reference": "bc8d7e30e2005bce5c59018b7cdb08e9fb45c0d1",
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@@ -2802,7 +2952,7 @@
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                 "wiki": "https://github.com/sirbrillig/phpcs-variable-analysis/wiki"
             },
-            "time": "2024-04-13T16:42:46+00:00"
+            "time": "2024-06-26T20:08:34+00:00"
         },
         {
             "name": "squizlabs/php_codesniffer",
@@ -2884,6 +3034,145 @@
             ],
             "time": "2024-05-22T21:24:41+00:00"
         },
+        {
+            "name": "symfony/polyfill-php73",
+            "version": "v1.30.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-php73.git",
+                "reference": "ec444d3f3f6505bb28d11afa41e75faadebc10a1"
+            },
+            "dist": {
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+                "url": "https://api.github.com/repos/symfony/polyfill-php73/zipball/ec444d3f3f6505bb28d11afa41e75faadebc10a1",
+                "reference": "ec444d3f3f6505bb28d11afa41e75faadebc10a1",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.1"
+            },
+            "type": "library",
+            "extra": {
+                "thanks": {
+                    "name": "symfony/polyfill",
+                    "url": "https://github.com/symfony/polyfill"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php73\\": ""
+                },
+                "classmap": [
+                    "Resources/stubs"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill backporting some PHP 7.3+ features to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
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+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2024-05-31T15:07:36+00:00"
+        },
+        {
+            "name": "szepeviktor/phpstan-wordpress",
+            "version": "v1.3.5",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/szepeviktor/phpstan-wordpress.git",
+                "reference": "7f8cfe992faa96b6a33bbd75c7bace98864161e7"
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+            "require": {
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+            },
+            "require-dev": {
+                "composer/composer": "^2.1.14",
+                "dealerdirect/phpcodesniffer-composer-installer": "^1.0",
+                "php-parallel-lint/php-parallel-lint": "^1.1",
+                "phpstan/phpstan-strict-rules": "^1.2",
+                "phpunit/phpunit": "^8.0 || ^9.0",
+                "szepeviktor/phpcs-psr-12-neutron-hybrid-ruleset": "^1.0",
+                "wp-coding-standards/wpcs": "3.1.0 as 2.3.0"
+            },
+            "suggest": {
+                "swissspidy/phpstan-no-private": "Detect usage of internal core functions, classes and methods"
+            },
+            "type": "phpstan-extension",
+            "extra": {
+                "phpstan": {
+                    "includes": [
+                        "extension.neon"
+                    ]
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "SzepeViktor\\PHPStan\\WordPress\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "WordPress extensions for PHPStan",
+            "keywords": [
+                "PHPStan",
+                "code analyse",
+                "code analysis",
+                "static analysis",
+                "wordpress"
+            ],
+            "support": {
+                "issues": "https://github.com/szepeviktor/phpstan-wordpress/issues",
+                "source": "https://github.com/szepeviktor/phpstan-wordpress/tree/v1.3.5"
+            },
+            "time": "2024-06-28T22:27:19+00:00"
+        },
         {
             "name": "theseer/tokenizer",
             "version": "1.2.3",
@@ -3002,7 +3291,7 @@
         },
         {
             "name": "wp-phpunit/wp-phpunit",
-            "version": "6.5.3",
+            "version": "6.5.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/wp-phpunit/wp-phpunit.git",
@@ -3192,5 +3481,5 @@
         "php": ">=7.4"
     },
     "platform-dev": [],
-    "plugin-api-version": "2.3.0"
+    "plugin-api-version": "2.6.0"
 }
diff --git a/package.json b/package.json
index 9fd886de..3f39a511 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,8 @@
     "lint:js:fix": "wp-scripts lint-js --fix",
     "test:php": "npx wp-env run tests-cli ./source/vendor/phpunit/phpunit/phpunit -c ./source/phpunit.dev.xml ./source/tests/phpunit",
     "test:e2e": "npx wp-env clean tests && npx playwright test ./e2e/specs",
-    "prepare": "husky"
+    "prepare": "husky",
+    "phpstan": "./vendor/bin/phpstan"
   },
   "lint-staged": {
     "*.php": "./vendor/bin/phpcs"
diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 00000000..adac6be4
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,13 @@
+parameters:
+    level: 2
+    paths:
+        - .
+    scanDirectories:
+        - %currentWorkingDirectory%/vendor
+    excludePaths:
+        analyse:
+            - %currentWorkingDirectory%/vendor/*
+            - %currentWorkingDirectory%/node_modules/*
+            - %currentWorkingDirectory%/tests/*
+    fileExtensions:
+        - php