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<?php

// Example variables
$num1 = 10;
$num2 = 20;

// If statement
if ($num1 > $num2) {
    echo "$num1 is greater than $num2";
}

echo "<br>";

// If-else statement
if ($num1 > $num2) {
    echo "$num1 is greater than $num2";
} else {
    echo "$num1 is not greater than $num2";
}

echo "<br>";

// Switch statement
$color = "red";

switch ($color) {
    case "red":
        echo "The color is red";
        break;
    case "blue":
        echo "The color is blue";
        break;
    case "green":
        echo "The color is green";
        break;
    default:
        echo "Unknown color";
}

?>