Binary Operator

A binary operator is an operator that operates on a two operands. It performs an operation based on the value of both operand. PHP supports several binary operators, including the following:

  • Assignation operator =

  • Equality operator ==

  • Difference operator !- and <>

  • Identity operator ===

  • Non-identity operator !==

  • Math operators, such as addition +, substraction -, multiplication *, division /, power **, modulo %

  • Comparison operators, such as greater than >, greater or equal than >=, lesser than <, lesser or equal than <=

  • Concatenation, with the dot operator .

  • Spaceship operator, <=>

  • All the short operators, that combines a binary operation with an assignation: for example, add and assign +=

And many others.

<?php

$a = 1;
$a +=2;
var_dump($a === 3); // true

?>

Related : Unary Operator, Ternary Operator, Binary