通过Email发送PHP错误的方法

<?php
// our custom error handler
function nettuts_error_handler($number, $message, $file, $line, $vars){
  $email = "
    <p>an error ($number) occurred on line
    <strong>$line</strong> and in the <strong>file: $file.</strong>
    <p> $message </p>";
  $email .= "<pre>" . print_r($vars, 1) . "</pre>";
  $headers = 'content-type: text/html; charset=iso-8859-1' . "\r\n";
  // email the error to someone...
  error_log($email, 1, 'you@youremail.com', $headers);
  // make sure that you decide how to respond to errors (on the user's side)
  // either echo an error message, or kill the entire project. up to you...
  // the code below ensures that we only "die" if the error was more than
  // just a notice.
  if ( ($number !== e_notice) && ($number < 2048) ) {
    die("there was an error. please try again later.");
  }
}
// we should use our custom function to handle errors.
set_error_handler('nettuts_error_handler');
// trigger an error... (var doesn't exist)
echo $somevarthatdoesnotexist;