PHP 7.1 in 10 minutes

Ian Littman / @iansltx

NomadPHP EU Lightning Talks / December 2016

http://ian.im/nom7110m

PHP 7.1 is out!

• CentOS and Friends (including Amazon Linux)
  • https://blog.remirepo.net/post/2016/12/05/Install-PHP-7.1-on-CentOS-RHEL-or-Fedora (Remi)
  • ius has php71u and associated
• Debian-based (Ubuntu etc.)
  • https://launchpad.net/~ondrej/+archive/ubuntu/php
  • Dotdeb doesn't have 7.1 yet
• MacOS (fka OS X)
  • brew has php71
  • https://php-osx.liip.ch/
• http://windows.php.net/download#php-7.1

Nullable Types

function get(?int $id) : ?MyObject {
    // return either a MyObject or null
}

ArgumentCountError?!?

• When too few arguments are passed to a call
• Used to be a Warning
• Is now an Error (catchable)
• If your code has this issue, 7.1 is a BC break for you

Class Constant Visibility

class MyObject
{
    protected const SECRET = "yoloswag";
}

Void Return Types

function executeAThing() : void
{
    // doesn't return anything
}

Short List Syntax

[$a, $b, $c] = returnsAnArray();

foreach (arrayOfArrays() as [$first, $second]) {}

iterable pseudo-type

function doAThingOnASet(iterable $set)
{
    // foreach over a thing
    // array or Traversable
}

Gotta catch 'em all

try {
    // do something risky
} catch (BadThing | BlackSwanEvent $e) {
    // handle these exception types
}

Closure::fromCallable()

$strlenIsNowAClosure = 
    Closure::fromCallable('strlen');

...and more!

• Async pcntl handling
• HTTP/2 Server Push support in cURL
• AEAD in OpenSSL
• Negative string offset support in more places
• Edge case cleanup
• ...and more!

Thanks!