php operations

// Addition and subtraction operations
$a = 100;
$b = 50;

echo $a - $b, '
';

echo $a + $b, '
';


// Modulo operation
echo 100%9, '';

// Comparison operation
$score = 60;
if ($score >= 60) {
echo 'pass';
} else {
echo 'fail
';
} else {
echo 'Strings are not equal';
}
?>