What is spaceship operator PHP?

The spaceship operator or combined comparison operator is denoted by “<=>“. This is a three-way comparison operator and it can perform greater than, less than and equal comparison between two operands. … This operator can be used with integers, floats, strings, arrays, objects, etc.

What is the use of spaceship operator in PHP?

In PHP 7, a new feature, spaceship operator has been introduced. It is used to compare two expressions. It returns -1, 0 or 1 when first expression is respectively less than, equal to, or greater than second expression.

What is the operator in PHP?

PHP Operator is a symbol i.e used to perform operations on operands. In simple words, operators are used to perform operations on variables or values. For example: $num=10+20;//+ is the operator and 10,20 are operands.

What is not introduced in PHP 7?

The following are some of the new features PHP 7: Scalar type declarations. Return type declarations. Null coalescing operator.

Is null coalescing operator PHP?

In PHP 7, a new feature, null coalescing operator (??) has been introduced. It is used to replace the ternary operation in conjunction with isset() function. The Null coalescing operator returns its first operand if it exists and is not NULL; otherwise it returns its second operand.

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What is the use of spaceship?

A spacecraft is a vehicle or machine designed to fly in outer space. A type of artificial satellite, spacecraft are used for a variety of purposes, including communications, Earth observation, meteorology, navigation, space colonization, planetary exploration, and transportation of humans and cargo.

What are the features of PHP 7?

PHP 7 features and improvements

  • New PHP 7 features: a quick overview.
  • Scalar type hints.
  • Return type declarations.
  • Anonymous classes.
  • The Closure::call() method.
  • Generator delegation.
  • Generator return expressions.
  • The null coalesce operator.

Is equal to in PHP?

The comparison operator called as the Identical operator is the triple equal sign “===”. This operator allows for a much stricter comparison between the given variables or values. This operator returns true if both variable contains same information and same data types otherwise return false.

What is PHP full form?

PHP (recursive acronym for PHP: Hypertext Preprocessor ) is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML.

What are the features of PHP?

Features of PHP

  • Features of php. It is most popular and frequently used world wide scripting language, the main reason of popularity is; It is open source and very simple. …
  • Simple. …
  • Interpreted. …
  • Faster. …
  • Open Source. …
  • Platform Independent. …
  • Case Sensitive. …
  • Error Reporting.

What is PHP used for?

PHP is a server side scripting language that is embedded in HTML. It is used to manage dynamic content, databases, session tracking, even build entire e-commerce sites. It is integrated with a number of popular databases, including MySQL, PostgreSQL, Oracle, Sybase, Informix, and Microsoft SQL Server.

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What is current PHP version?

W3Techs reports that, as of April 2021, “PHP is used by 79.2% of all the websites whose server-side programming language we know.”


Designed by Rasmus Lerdorf
Developer The PHP Development Team, Zend Technologies
First appeared 1995
Stable release 8.0.9 / 29 July 2021
Major implementations

What is the difference between PHP 5 and 7?

The performance of PHP 7 and PHP 5 is a major difference. … PHP is powered by Zend engine even since the release of PHP 4. PHP 5 uses Zend II but PHP 7 uses a brand new model of engine called PHP-NG or Next Generation. This new PHPNG engine improves the performance as much as twice with optimized memory usage.


The is_null() function checks whether a variable is NULL or not. This function returns true (1) if the variable is NULL, otherwise it returns false/nothing.

Is null ternary PHP?

The null coalescing operator is available since PHP 7.0. It similar to the ternary operator, but will behave like isset on the lefthand operand instead of just using its boolean value. … The null coalescing operator takes two operands, making it a binary operator.

Is null ternary operator PHP?

Ternary Operator throws e-notice if left operand is null, while null coalescing operator does not throws e-notice if left operand does not exist. Ternary Operator checks whether the value is true, but Null coalescing operator checks if the value is not null.

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