[PHP] New Features of porting from PHP 5.6.x to PHP 7.0.x, 5.6.x7.0.x

[PHP] New Features of porting from PHP 5.6.x to PHP 7.0.x, 5.6.x7.0.x

New features:

1. scalar type declaration

String (string), INTEGER (int), floating point number (float), Boolean (bool), callable, array, self, Class/interface name

2. Return Value Type Declaration

Define parameter type and Return Value Type

Function test (int $ a): int {}

If the parameter is not passed as required, an exception is returned.

3. null merge Operator

Null merge operator (??) , Equivalent to a ternary Operator

$ Name = $ _ GET ['name']? "Test"; echo $ name;

4. spacecraft operators (composite comparison operators)

If $ a is less than, equal to, or greater than $ B, it returns-1, 0, or 1.

$ A <=> $ B

5. define a constant array through define ()

Define ('animal', ['Dog', 'cat', 'bird']);

6. Anonymous class

A function parameter must be of the forced type, which is completed using an anonymous class.

Interface Logger {

Public function log (string $ msg );

}

Function test (Logger $ logger ){

Echo $ logger-> log ('aaa ');

}

Test (new Class implements Logger {

Public function log (string $ msg ){

Return $ msg;

}

});

7. Unicode codepoint translation syntax

The complete Unicode character is called codepoint. Unicode sets a unified and unique binary encoding for each character in each language.

8. Provides Filtering for unserialize (), provides a safer way to unpackage unreliable data, and prevents potential code injection through whitelist.

9. Expected, assert-check whether an asserted is FALSE

10. Group use declarations

Classes, functions, and constants imported from the same namespace can now be imported at one time using a single use statement.

11. The generator can return expressions.

12. Generator delegation

13. Integer Division function intdiv ()

14. session options

Session_start () can accept an array as the parameter to overwrite the settings in the php. ini file.

15. CSPRNG Functions

Random_bytes () and random_int () are used to generate high-security random strings and random integers.

16. You can use the list () function to expand the objects that implement the ArrayAccess interface.

17. Other features