diff --git a/php/content.md b/php/content.md
index da65a5ef1..75a7ff77d 100644
--- a/php/content.md
+++ b/php/content.md
@@ -99,6 +99,13 @@ Remember, you must install dependencies for your extensions manually. If an exte
 
 Some extensions are not provided with the PHP source, but are instead available through [PECL](https://pecl.php.net/). To install a PECL extension, use `pecl install` to download and compile it, then use `docker-php-ext-enable` to enable it:
 
+```dockerfile
+FROM php:7.1-fpm
+RUN pecl install redis-3.1.0 \
+	&& pecl install xdebug-2.5.0 \
+	&& docker-php-ext-enable redis xdebug
+```
+
 ```dockerfile
 FROM php:5.6-fpm
 RUN apt-get update && apt-get install -y libmemcached-dev zlib1g-dev \