community: Add PHP language parser to document_loaders (#19850)

**Description:**
Added a PHP language parser to document_loaders
**Issue:** N/A
**Dependencies:** N/A
**Twitter handle:** N/A

---------

Co-authored-by: Chester Curme <chester.curme@gmail.com>

docs/docs/modules/data_connection/document_transformers/code_splitter.ipynb

@@ -612,6 +612,63 @@
     "haskell_docs = haskell_splitter.create_documents([HASKELL_CODE])\n",
     "haskell_docs"
    ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "4a11f7cd-cd85-430c-b307-5b5b5f07f8db",
+   "metadata": {},
+   "source": [
+    "## PHP\n",
+    "Here's an example using the PHP text splitter:"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "id": "90c66e7e-87a5-4a81-bece-7949aabf2369",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[Document(page_content='<?php\\nnamespace foo;'),\n",
+       " Document(page_content='class Hello {'),\n",
+       " Document(page_content='public function __construct() { }\\n}'),\n",
+       " Document(page_content='function hello() {\\n    echo \"Hello World!\";\\n}'),\n",
+       " Document(page_content='interface Human {\\n    public function breath();\\n}'),\n",
+       " Document(page_content='trait Foo { }\\nenum Color\\n{\\n    case Red;'),\n",
+       " Document(page_content='case Blue;\\n}')]"
+      ]
+     },
+     "execution_count": 2,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "PHP_CODE = \"\"\"<?php\n",
+    "namespace foo;\n",
+    "class Hello {\n",
+    "    public function __construct() { }\n",
+    "}\n",
+    "function hello() {\n",
+    "    echo \"Hello World!\";\n",
+    "}\n",
+    "interface Human {\n",
+    "    public function breath();\n",
+    "}\n",
+    "trait Foo { }\n",
+    "enum Color\n",
+    "{\n",
+    "    case Red;\n",
+    "    case Blue;\n",
+    "}\"\"\"\n",
+    "php_splitter = RecursiveCharacterTextSplitter.from_language(\n",
+    "    language=Language.PHP, chunk_size=50, chunk_overlap=0\n",
+    ")\n",
+    "haskell_docs = php_splitter.create_documents([PHP_CODE])\n",
+    "haskell_docs"
+   ]
   }
  ],
  "metadata": {
@@ -630,7 +687,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.1"
+   "version": "3.10.4"
   }
  },
  "nbformat": 4,