# PHP Error Handling

Error handling is the process of catching errors raised by your program and then taking appropriate action.

---

## 1. Try...Catch
The `try...catch` statement allows you to define a block of code to be tested for errors while it is being executed.

```php
try {
  // Code that may throw an exception
  $x = 10 / 0;
} catch (Exception $e) {
  // Code that runs if an exception is caught
  echo "Unable to divide.";
}
```

## 2. The Exception Object
The Exception object contains information about the error or unexpected behavior.

```php
try {
  throw new Exception("Something went wrong");
} catch(Exception $e) {
  echo "Message: " . $e->getMessage();
}
```

## 3. Finally
The `finally` block will always be executed after the try and catch blocks, regardless of whether an exception was thrown or not.

```php
try {
  echo "Process started.<br>";
  throw new Exception("Error!");
} catch(Exception $e) {
  echo "Error caught.<br>";
} finally {
  echo "Process finished.";
}
```

## 4. Throwing Exceptions
The `throw` statement allows you to create a custom error.

```php
function checkNum($number) {
  if($number > 1) {
    throw new Exception("Value must be 1 or below");
  }
  return true;
}

try {
  checkNum(2);
} catch(Exception $e) {
  echo "Message: " . $e->getMessage();
}
```

[[programming/php/php]]