how to php extension in visual studio code code example

Example 1: intellisense in visual studio code for php-oop

"[php]": {
  "editor.defaultFormatter": "junstyle.php-cs-fixer",
  "editor.formatOnSave": true
},

Example 2: intellisense in visual studio code for php-oop

"php-cs-fixer.rules": "@PhpCsFixer",