Add PHP configuration options (#31)

Author: devalog

fern/products/sdks/overview/php/configuration.mdx

@@ -3,6 +3,39 @@ title: PHP Configuration
 description: Configuration options for the Fern PHP SDK.
 ---
 
-# PHP Configuration
+You can customize the behavior of the PHP SDK generator in `generators.yml`:
+
+```yaml {7-8}
+default-group: local
+groups:
+  local:
+    generators:
+      - name: fernapi/fern-python
+        version: <Markdown src="/snippets/version-number.mdx"/>
+        config:
+          clientName: YourClientName
+```
+
+## SDK Configuration Options
+
+<ParamField path="clientName" type="string" required={false}>
+</ParamField>
+
+<ParamField path="inlinePathParameters" type="boolean" required={false}>
+</ParamField>
+
+<ParamField path="packageName" type="string" required={false}>
+</ParamField>
+
+<ParamField path="packagePath" type="string" required={false}>
+</ParamField>
+
+<ParamField path="propertyAccess" type="'public' | 'private'" required={false}>
+</ParamField>
+
+<ParamField path="namespace" type="string" required={false}>
+</ParamField>
+
+<ParamField path="composerJson" type="Record<string, any>" required={false}>
+</ParamField>
 
-Discover how to configure the Fern PHP SDK for your project.