PHPPHP7 min read

PHP Operators and Basic Math

Use arithmetic, comparison, and logical operators to build conditions and logic.

Ryan Adams
November 8, 2025
5.1k200

Operators help you perform actions on values.

Arithmetic operators

$a = 10;
$b = 3;

echo $a + $b; // 13
echo $a - $b; // 7
echo $a * $b; // 30
echo $a / $b; // 3.33
echo $a % $b; // 1

Comparison operators

var_dump(5 == "5");  // true
var_dump(5 === "5"); // false (type matters)

Logical operators

if ($age > 18 && $isStudent) {
  echo "Adult student";
}

Next: if, else, and decision making.

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