I have compiled PHP 7.0 main new features, php7.0 new features _php tutorial

I have compiled PHP 7.0 main new features, php7.0 new features

So far, PHP has officially released the RC5 version of PHP7, which is expected to release the first official version around November! For now, PHP7 's major features are definitely in shape and there will be no more changes. Some of the iterations that follow are mainly fixes, optimizations and the like. Let's talk about the new features we've been looking forward to php7.0.

1. Scalar parameter type declaration

String, Integer (int), floating-point (float), and Boolean (bool) parameter declarations are now supported, which previously only supported class names, interfaces, arrays, and callable
Two styles: Forced conversion Mode (default) and strict mode

2. return type declaration

3.?? Operator

?? Used to replace the need for isset, which is a syntactic sugar.

4.<=> comparison Operators

is to look at the size of two expression values, three relationships: = return 0, < return-1, > return 1

5.define supports defining values for array types

PHP 5.6 already supports const syntax to define constants for array classes, and define syntax is supported in PHP7.

6. Anonymous class

7. Added the integer division function intdiv

Summary:

PHP 7 's performance breakthroughs have become one of the hottest topics recently, and the official PHP 7.0.0 Beta 2 has been released

New features

Performance boost: PHP 7 is twice times faster than PHP 5.6

Comprehensive and consistent 64-bit support

Removed some old sapi that are not supported (server-side application programming ports) and extensions

Added an empty join operator (??)

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