16_exceptions.php

<?php

/* ----------- Exceptions ----------- */

/*
  PHP has an exception model similar to that of other programming languages. An exception can be thrown, and caught ("catched") within PHP. Code may be surrounded in a try block, to facilitate the catching of potential exceptions. Each try must have at least one corresponding catch or finally block.
*/

function inverse($x) {
  if (!$x) {
    throw new Exception('Division by zero.');
  }
  return 1 / $x;
}


try {
  echo inverse(5) . '<br>';
  echo inverse(0);
} catch (Exception $e) {
  echo 'Caught exception: ',  $e->getMessage(), "\n";
} finally {
  echo "First finally.\n";
}

try {
  echo inverse(0);
} catch (Exception $e) {
  echo 'Caught exception: ',  $e->getMessage(), "\n";
} finally {
  echo "Second finally.\n";
}