PHP Operators
PHP supports arithmetic, comparison, logical, string, and special operators.
Example
<?php
// Arithmetic
$sum = 10 + 3; // 13
$mod = 10 % 3; // 1
$pow = 2 ** 8; // 256 (exponentiation)
// String concatenation (dot operator)
$first = "Hello";
$last = "World";
$full = $first . " " . $last; // "Hello World"
$full .= "!"; // "Hello World!"
// Comparison
var_dump(5 == "5"); // true (loose comparison)
var_dump(5 === "5"); // false (strict — type must match)
var_dump(5 <=> 3); // 1 (spaceship operator: -1, 0, or 1)
// Null coalescing
$user = $_GET['user'] ?? 'Guest'; // 'Guest' if not set
// Null safe operator (PHP 8)
$country = $user?->getAddress()?->getCountry();
?>