Add php_functions.php to autoload

Author: adamziel

composer.json

@@ -51,6 +51,7 @@
             "components/Zip/functions.php",
             "components/Polyfill/wordpress.php",
             "components/Polyfill/mbstring.php",
+            "components/Polyfill/php_functions.php",
             "components/Git/functions.php"
         ],
         "psr-4": {