How to do error logging in CodeIgniter PHP

Question

I want error logging in PHP CodeIgniter  How do I enable error logging     I have some questions    What are all the steps to log an error  How is an error log file created  How to push the error message into log file  whenever an error occurs   How do you e-mail that error to an email address

User · Accepted Answer

CodeIgniter has some error logging functions built in.

Make your /application/logs folder writable
In /application/config/config.php set
$config['log_threshold'] = 1;
or use a higher number, depending on how much detail you want in your logs
Use log_message('error', 'Some variable did not contain a value.');
To send an email you need to extend the core CI_Exceptions class method log_exceptions(). You can do this yourself or use this. More info on extending the core here

See http://www.codeigniter.com/user_guide/general/errors.html

User · Answer

To simply put a line in the server s error log  use PHP s error log   function  However  that method will not send an e-mail   First  to trigger an error   trigger error  Error message here   E USER ERROR     By default  this will go in the server s error log file  See the ErrorLog directive for Apache  To set your own log file   ini set  error log    path to log file      Note that the log file you choose must already exist and be writable by the server process  The simplest way to make the file writable is to make the server user the owner of the file   The server user may be nobody   www  apache  or something else  depending on your OS distribution    To e-mail the error  you need to set up a custom error handler   function mail error  errno   errstr   errfile   errline       message     Error  errno   errstr - Error on line  errline in file  errfile     error log  message      writes the error to the log file   mail  you yourdomain com    I have an error    message     set error handler  mail error   E ALL E NOTICE     Please see the relevant PHP documentation for more info

User · Answer

In config php add or edit the following lines to this  ------------------------------------------------------  config  log threshold     4      1 2 3   config  log path       home path to application logs     Run this command in the terminal  ---------------------------------- sudo chmod -R 777  home path to application logs

User · Answer

Also make sure that you have allowed codeigniter to log the type of messages you want in a config file   i e  config  log threshold      log level ranges 0-4

User · Answer

More oin regards to question part 4 How do you e-mail that error to an email address  The error log function has email destination too  http   php net manual en function error-log php  Agha  here I found an example that shows a usage  Send errors message via email using error log    error log  this- gt  errorMsg  1  ADMIN MAIL   Content-Type  text html  charset utf8 r nFrom    MAIL ERR FROM   r nTo    ADMIN MAIL

[php] How to do error logging in CodeIgniter (PHP)

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