The difference between php7 and 5

The difference between php7 and php5:

1. Performance improvement: PHP7 has twice the performance improvement than PHP5.0.

2. Comprehensive and consistent 64-bit support.

3. Many fatal errors in the past are now changed to throwing exceptions.

4. PHP 7.0 has removed some old SAPI (server-side application programming port) and extensions that are no longer supported compared to PHP 5.0.

5. PHP 7.0 has a new null join operator than PHP 5.0.

6. PHP 7.0 adds a new combined comparison operator than PHP 5.0.

7. PHP 7.0 adds a function return type declaration compared to PHP 5.0.

8. PHP 7.0 adds a new scalar type declaration compared to PHP 5.0.

9. PHP 7.0 has a new anonymous class compared to PHP 5.0.

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