What’s New In Php 7 ?

Support for anonymous classes has been added via new class. These can be used in place of full class definitions for throwaway objects.

PHP 7 adds support for return type declarations. Similarly to argument type declarations, return type declarations specify the type of the value that will be returned from a function. The same types are available for return type declarations as are available for argument type declarations.

Array constants can now be defined with define(). In PHP 5.6, they could  Only be defined with const. For Ex : define(‘COLORS’, ; // outputs “cat”

The null coalescing operator (??) has been added as syntactic sugar for the common case of needing to use a ternary in conjunction with isset(). It returns its first operand if it exists and is not NULL; otherwise it returns its second operand. For Ex: $username = $_GET) ? $_GET : ‘nobody’;

The spaceship operator is used for comparing two expressions. It returns -1, 0 or 1 when $a is respectively less than, equal to, or greater than $b. For Ex: Float :echo 1.5 <=> 2.5;//-1 Strings : echo “a” <=> “b”; // -1 Integers :echo 1 <=> 2; // -1

• Improved performance: PHP 7 is up to twice as fast as PHP 5
• Huge amount of reduction in memory usage
• Abstract Syntax Tree
• Consistent 64-bit support
• Better Exception hierarchy
• Many fatal errors converted to Exceptions
• Secured random number generator
• The null coalescing operator (??)
• Return and Scalar Type Declarations
• Zero cost asserts

Source: From the official PHP documentation.

Techcronus specializes into opensource PHP web development services since 2010. If you are looking for some assistance to develop or upgrade your website using PHP 7, you may reach us for further discussion.