What is differences between PHP5 and PHP7 ?

Main differences between PHP5 and PHP7 are as below -

1. PHP 5 is using Zend Engine II while PHP7 is using PHPNG (that is PHP Next Generation)
2. Benchmarks for PHP 7 consistently show speeds twice as fast as PHP 5.6
3. In PHP7, error exception facility called Engine Exception is present in which you can mark the fatal error as exception
4. PHP7 supports 64-bit system while PHP5 does not support it
5. PHP7 introduced New Operators

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