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[MUSIC]

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Hello, welcome to PHP 7.

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I'm Alena, and I'm very happy to introduce
you to the first major release in PHP

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in over a decade.

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The PHP community is very excited
to welcome this latest release.

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But that doesn't mean that PHP
has been stagnant all this time.

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On the contrary,
minor releases of PHP 5 brought many

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exciting features to PHP, including the
support of object oriented programming and

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the many features associated with that.

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So first off, why seven and not six?

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Let's just say that Unicode didn't go so
well.

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As with many projects,
requirements were not well defined and

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people couldn't agree on things,
so the project ground to a halt.

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But besides Unicode for
encoding special and

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international characters, almost all
the features being discussed for

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PHP6 Were eventually implemented
in PHP 5.3 and later.

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So we really didn't miss anything else.

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Through it all,
many things were learned, and

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a new process for
feature requests was put in place.

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When the feature set for a major
release was accepted, it was decided to

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avoid confusion with a dead project and to
skip to version 7 for the latest release.

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So, what makes PHP 7 so special?

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In a single word, speed.

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The developers worked very hard to
refactor the PHP code base in order to

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reduce memory consumption and increase
performance, and they certainly succeeded.

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Bench marks for PHP 7 consistently
show speeds twice as fast as PHP 5.6.

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And many times even faster.

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Although these results are not
guaranteed for your project,

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the benchmarks were tested against major
projects such as Drupal and WordPress.

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So these numbers don't come from
abstract performance tests.

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With statistics showing that 25% of
the web is being run on WordPress,

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this is a great thing for everyone.

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So what does this mean for
you as a developer.

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Besides making your sites run faster,
there are a number of new features in

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PHP 7 and
I'll be covering these top features here.

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Type declarations, exceptions and
error handling, spaceship and

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null coalesce operators,
easy user land CSPRNG.

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We'll cover some of the gotchas
associated with these features, and

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we'll also introduce you to a few
more changes to watch out for.

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To help you get started right away, I've
included links to many different resources

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as well as downloads of any of the code
snippets used in these videos.

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So hold on to your hat and buckle up for
this exciting time in PHP.