PHP custom exceptions for catch "Notice" errors

file.php

<?php // https://stackoverflow.com/a/5373824

set_error_handler('exceptions_error_handler');
function exceptions_error_handler($severity, $message, $filename, $lineno) {
  if (error_reporting() == 0) {
    return;
  }
  if (error_reporting() & $severity) {
    throw new ErrorException($message, 0, $severity, $filename, $lineno);
  }
}

$a[1] = 'jfksjfks';

try {
      $b = $a[0];
} catch (Exception $e) {
      echo "jsdlkjflsjfkjl";
}