PHP custom function error handling method

This article mainly introduces the usage of PHP custom error handling. An example analyzes PHP's error handling skills through custom functions. Friends in need can refer to it.

The examples in this article describe PHP custom errors. Process usage. The details are as follows:

<?php
error_reporting(E_ALL);
function ErrHandler($errorno, $errorstr, $errorfile, $errorline)
{
  $display = true;
  $notify = false;
  $halt_script = false;
  $error_msg = "<br>The $errorno error is occurring at $errorline in
  $errorfile<br>";
  switch($errorno)
  {
   case E_USER_NOTICE:
   case E_NOTICE:
   $halt_script = false;
   $notify = true;
   $label = "<B>Notice</B>";
   break;
   case E_USER_WARNING:
   case E_WARNING:
   $halt_script = false;
   $notify = true;
   $label = "<b>Warning</b>";
   break;
   case E_USER_ERROR:
   case E_ERROR:
   $label = "<b>Fatal Error</b>";
   $notify=true;
   $halt_script = false;
   break;
   case E_PARSE:
   $label = "<b>Parse Error</b>";
   $notify=true;
   $halt_script = true;
   break;
   default:
   $label = "<b>Unknown Error</b>";
   break;
  }
  if($notify)
  {
   $msg = $label . $error_msg;
   echo $msg;
  }
  if($halt_script) exit -1;
}
$error_handler = set_error_handler("ErrHandler");
echo "<BR><H2>Using Custom Error Handler</h2><BR>";
trigger_error("<BR>Error caused by E_USER_NOTICE</BR>", E_USER_NOTICE);
trigger_error("<BR>Error caused by E_USER_WARNING</BR>", E_USER_WARNING);
trigger_error("<BR>Error caused by E_USER_ERROR</BR>", E_USER_ERROR);
trigger_error("<BR>Error caused by E_PARSE</BR>", E_PARSE);
?>

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