Question

getting a new line in a log file

Asked by: flow79

Hello all!

This should be an easy one.  I am writing some exception handling to my database classes, and I want to log the exceptions thrown into a log file.  This part is done.  However, when I use \n to write a new line to the file, when I open the log file in Notepad, all I see is a little box, instead of the line ending.

Any thoughts?

Thanks.

Code is below....I have left the $type variable blank in the query function call in test_mysql.php in order to have it error intentionally (to check the logging capabilities)

***** START CODE *****
mysql.php snippet
--------------------------------------------------
function query($SQL,$type){
 if($type == "" || $type == NULL)
 {
    throw new Exception("No query type has been stated.  Cannot continue.");
 }


test_mysql.php snippet
--------------------------------------------------

require_once("mysql.php");
$db = new mysql();

try
{
  $response = $db->query("SELECT * FROM uploads","");
  echo $response;
}
catch(Exception $e)
{
  $error = "ERROR: Exception occurred. ". $e->getMessage() ." (Exception Code ". $e->getCode() .") in ". $e->getFile() ." on line ". $e->getLine() .".";
  echo $error;
      error_log($error."\n", 3, "dbErrorLog.log");
      exit();
}

****** END CODE ******

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Asked On
2007-01-05 at 09:47:28ID22112556
Tags

file

,

line

,

new

,

log

Topic

PHP Scripting Language

Participating Experts
1
Points
50
Comments
5

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Answers

 

by: TeRReFPosted on 2007-01-05 at 09:49:13ID: 18253201

use \r\n instead of just \n

 

by: flow79Posted on 2007-01-05 at 09:55:35ID: 18253244

that worked perfectly - thanks.  can you tell me why the \r is necessary?

 

by: TeRReFPosted on 2007-01-05 at 10:09:42ID: 18253374

You're welcome :)

Windows uses \r\n as line endings
Linux/ Unix use \n
Mac uses \r

So, what you use depends on what OS you're writing your app for :)

 

by: flow79Posted on 2007-01-05 at 10:35:56ID: 18253567

awesome - thats really good information to know.  you rock!  just for my own knowledge, what category would those combinations fall under?  I guess I'm looking for a good descriptor to describe any \character command.

Thansk.

 

by: TeRReFPosted on 2007-01-05 at 10:51:33ID: 18253720

The're called escaped characters, read more about it here:
http://nl2.php.net/manual/en/language.types.string.php

20120131-EE-VQP-002

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