I am using Brew to install latest php version, and it works in my terminal:

```
$ php -v
PHP 7.3.7 (cli) (built: Jul  5 2019 12:44:05) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.3.7, Copyright (c) 1998-2018 Zend Technologies
    with Zend OPcache v7.3.7, Copyright (c) 1999-2018, by Zend Technologies

```

But when I create a new symfony framework project, and run `symfony server:start`, it shows me that symfony using the old php7.1, but the installed latest php is 7.3.

```
$symfony server:start

 [WARNING] run "symfony server:ca:install" first if you want to run the web server
 with TLS support, or use "--no-tls" to avoid this warning

Jul 31 19:21:51 |DEBUG| PHP    Using PHP version 7.1.23 (from default version in $PATH)

```

the message shows it using php 7.1.23 from $PATH as default version, so I delete the php7.1.23 from the $PATH, and link php7.3 to the $PATH, but still not work