All That’s New in PHP 7

PHP 7 is a significant release of the PHP scripting language and is believed to be a revolution in the web applications development arena; these apps can be delivered for mobile, enterprises, and the cloud. PHP 7 is considered to be the most notable update for PHP after the release of PHP 5 in 2004.

Recent Version: PHP 7.4.9 

Released: 6th August 2020

Features of PHP 7:

• Scalar Type Declarations

Type declarations allow the function to access specific types of parameters at the time of the call. The Scalar type declarations are of two kinds: coercive, or you can call it “default,” and the other is called strict.

• Null Coalescing Operator

The null coalescing operator is represented by ??. It’s used to verify whether the value is set or is invalid. In simpler words, if the value exists and is not null, then it returns the first operand. Otherwise, it goes to the second operand.

• Return Type Declarations

Functioning as a Parameter Type Declaration, the Return Type Declaration refers to a type of value you wish to return from a function.

• Spaceship Operator

The Spaceship operator is represented by <=>. It formulates a comparison between two expressions. It often returns when one variable is less than, equal to, or greater ( -1, 0, 1 ) than any other variable.

• Constant Arrays Using define()

PHP 7 allows a developer to define the array as a constant by using the “define.”

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