PHP Nested If

In PHP, you can include one if statement inside another, forming a “nested if” structure. This is particularly useful when you need to evaluate multiple related conditions.

Example

Consider a scenario where you want to check the engine power of a motorcycle. If its horsepower exceeds 100, it will further check if it exceeds 150 and output messages accordingly:

$horsepower = 130; // Horsepower of the motorcycle

if ($horsepower > 100) {
  echo "Powerful engine";
  if ($horsepower > 150) {
    echo " and exceptionally high performance!";
  } else {
    echo " but not a superbike-level engine.";
  }
}

$horsepower = 130; // Horsepower of the motorcycle

​

if ($horsepower > 100) {

  echo "Powerful engine";

  if ($horsepower > 150) {

    echo " and exceptionally high performance!";

  } else {

    echo " but not a superbike-level engine.";

  }

}