Summary of new features of PHP7

PHP 7 adds many features, the most important of which are described below:

• Performance Improvements – PHPNG code is merged in PHP7 and is as fast as PHP twice as much as 5.

• Lower memory consumption – Optimized PHP 7 uses fewer resources.

• Scalar type declarations - parameter and return types can now be enforced.

• 64-bit support – Consistent support for computers with 64-bit architecture.

• Exception Hierarchy – The exception hierarchy has been improved.

• Many fatal errors converted to exceptions - The exception range has been increased to include many fatal errors converted as exceptions.

• Secure Random Number Generator - Added new secure random number generator API.

• Deprecated SAPIs and extensions removed - Various old and unsupported SAPIs and extensions have been removed from the latest version.

• Null coalescing operator (??) - New null coalescing operator added.

• Return type and scalar type declaration – Support for adding return types and parameter types.

• Anonymous class - supports adding anonymity.

• Zero cost asserts - Supports adding Zero cost asserts.

PHP 7 uses the new Zend Engine 3.0 to improve application performance, with performance nearly twice that of PHP 5.6 and memory consumption improved by 50%. It allows serving more concurrent users without requiring any additional hardware. PHP 7 is designed and refactored with current workloads in mind.

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