OSX not respecting PATH when trying to install homebrew php

Question

I have installed homebrew-php php72 on OSX high sierra. Strangely when I run php I still get the pre-installed php 7.1 - even more strangely when I run which php it tells me that it will use the homebrew version from /usr/local/bin not the pre-installed version in /usr/bin. I dont have an aliases set up.

Some shell output:

$ echo $PATH
/usr/local/bin:/bin:/usr/bin:/usr/sbin:/sbin:/opt/X11/bin

$ which php
/usr/local/bin/php

$ php --version
PHP 7.1.7 (cli) (built: Jul 15 2017 18:08:09) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.1.0, Copyright (c) 1998-2017 Zend Technologies

$ /usr/local/bin/php --version
PHP 7.2.3 (cli) (built: Mar  8 2018 10:30:06) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
    with Zend OPcache v7.2.3, Copyright (c) 1999-2018, by Zend Technologies

$ /usr/bin/php --version
PHP 7.1.7 (cli) (built: Jul 15 2017 18:08:09) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.1.0, Copyright (c) 1998-2017 Zend Technologies

$ alias | grep php # There are no aliases
$

$ type -a php
php is /usr/local/bin/php
php is /usr/bin/php

I cant think of any reason this could happen any ideas?

Thanks NFV

Answer 1

As discussed in the commands hash -r fixed the issue. From help hash:

  -r                forget all remembered locations

And just for the record: Why not use “which”? What to use then?