add code samples

Author: carlos-granados

docs/installation.md

@@ -7,3 +7,32 @@ sidebar:
 ---
 
 Installing PHP Debugger is straightforward and similar to installing other PHP extensions. The extension is available through PIE and can also be compiled from source. Once installed, you'll need to configure your php.ini file to enable the extension and set up your IDE to communicate with the debugger using the DBGp protocol.
+
+## Configuration
+
+Add the following to your `php.ini` file:
+
+```ini
+zend_extension=php_debugger
+php_debugger.mode=debug
+php_debugger.start_with_request=trigger
+php_debugger.client_host=127.0.0.1
+php_debugger.client_port=9003
+```
+
+## Usage Example
+
+You can trigger breakpoints programmatically in your PHP code:
+
+```php
+<?php
+function processData($data) {
+    // Process some data
+    $result = transform($data);
+
+    // Trigger breakpoint for debugging
+    php_debugger_break();
+
+    return $result;
+}
+```