Merge pull request #7293 from ramin2nt2/patch-2

[skip ci] Adding Composer Auto loader Optimization Section

docs/guide/tutorial-performance-tuning.md

@@ -218,6 +218,12 @@ foreach ($posts as $post) {
 Note that you can use array notation even if `asArray` wasn't specified and you're
 working with AR objects.
 
+### Composer Atuoloader Optimization
+The autoloader's performance is really important in modern PHP applications. Optimizing Composer's autoloader using ``` php composer.phar dumpautoload -o ``` is the way to have maximum performance. But it is the responsibility of the application developer to apply the optimization.
+
+
+php composer.phar dumpautoload -o
+
 ### Processing data in background
 
 In order to respond to user requests faster you can process heavy parts of the