<?php
  //create your error handler function
  function handler($error\_type,$error_message, 
                   $error\_file,$error_line) {
       
    switch ($error\_type)\; \{$//fatal error
      case E_ERROR:
        echo "<h1>Fatal Error</h1>";
        die("A fatal error has occured at line error_line of file " .
            "$error\_file.$<br>" .
            "Error message created was &quot;error_message&quot;");
        break;
            
      //warnings
      case E_WARNING:
        echo "<h1>Warning</h1>";
        echo "A warning has occured at line $error\_line\; of\; file\; "\; .\; "$error_file.<br>";
        echo " Error message created was &quot;$error\_message"";$//notices
      case E_NOTICE:
        //don't show notice errors
        break;
    }
  }
  
  //set the error handler to be used
  set_error_handler("handler");
  
  //set string with "Wrox" spelled wrong
  string_variable = "Worx books are great!";
  
  //try to use str_replace to replace Worx with Wrox
  //this will generate an E_WARNING
  //because of wrong parameter count
  str_replace("Worx", "Wrox");
  ?>