Spaceship Operator In PHP (<=>)

Introduction

The spaceship operator is a combined comparision operator, introduced in PHP version 7. It is a 3-way comparision operator.

Syntax

The syntax of spaceship operator is <=>

How it works?

If x and y are two variables, the x<=>y works as

Example

Without Spaceship Operator

$x = 10;
$y = 15;

if ($x > $y) {
    echo 1;
} elseif ($x < $y) {
    echo -1;
} else {
    echo 0;
}

With Spaceship Operator

$x = 10;
$y = 15;

echo $x <=> $y;

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