How PHP will Fare in 2017?
cloudways.com
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I don't see how this conclusion follows from anything in the article. As long as big players (specifically WordPress) hold down minimum version requirements, and shared hosting providers decline to upgrade, a very large percentage of PHP will still be run in pre-7.0 environments.
The professional PHP types will go to 7.0, but people developing commercially for WordPress are kind of stuck. And people developing professionally for WordPress are ~25% of the PHP ecosystem, if I had to guess.
As much as it pains me, I wouldn't be surprised to see it take until 2019 or 2020 for PHP7 to truly displace PHP 5.x. It took PHP 4 that long to disappear.
A lot of NodeJs code is written just to parallelize API/DB calls and I'm sure PHP would be sufficient in a lot of cases.
I know there's libraries but good luck getting widespread enterprise adoption of those.