I think so - at a guess I think usage is fairly static, there has been a lot of waiting for PHP7.
There are plenty of packages for integrations: https://packagist.org/ - A lot of SAAS providers have PHP libraries for their APIs.
There are also applications/frameworks that are powerful, supported and reliable: Laravel, WordPress, Joomla, Drupal, Symfony Framework etc. They’re not going anywhere any time soon and have large user bases.
Standards have been established by the PHP-FIG - covering coding standards, messaging and logging interfaces and other key areas like auto-loading. Entirely optional, but projects seem to be following these as a well-discussed and accepted set of standards.
PHP has a very low barrier to entry. It’s easy to understand how scripts run in relation to the environment (unlike Ruby which requires some kind of voodoo to get it working on Windows!). There are also masses of resources available online for learning the language. In particular Laracasts has become something that is not just for Laravel but PHP as well (it’s has now branched off to cover Vue.js and Gulp as well!)
I think the future is looky rosy for PHP… as part of a diverse range of technologies