How to Do Error Logging in Codeigniter (Php)

How to do error logging in CodeIgniter (PHP)

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

How to create Error log in PHP Codeigniter Framework

Yes you can enable for localhost. just go to applications/config/config.php and add

$config['log_threshold'] = 1;
$config['log_path'] = '';// add your path

$config['log_path'] = '' default will be applications/logs dir

log threshold values :-

0 = Disables logging, Error logging TURNED OFF
1 = Error Messages (including PHP errors)
2 = Debug Messages
3 = Informational Messages
4 = All Messages

For more :- How to do error logging in CodeIgniter (PHP)

log file in Codeigniter

Make your /application/logs folder writable

In /application/config/config.php set

$config['log_threshold'] = 1;

Use log_message('error', 'Some variable did not contain a value.');

If you deleted the file simply re upload..`

Error log in PHP Codeigniter Framework

Assuming this is the Codeigniter error logging you are referring to, check your config.php for the log_threshold setting and set it to 0 to disable error logging:

/*
|--------------------------------------------------------------------------
| Error Logging Threshold
|--------------------------------------------------------------------------
|
| If you have enabled error logging, you can set an error threshold to
| determine what gets logged. Threshold options are:
| You can enable error logging by setting a threshold over zero. The
| threshold determines what gets logged. Threshold options are:
|
|   0 = Disables logging, Error logging TURNED OFF
|   1 = Error Messages (including PHP errors)
|   2 = Debug Messages
|   3 = Informational Messages
|   4 = All Messages
|
| For a live site you'll usually only enable Errors (1) to be logged otherwise
| your log files will fill up very fast.
|
*/
$config['log_threshold'] = 0;

I usually set it to 1, at least while in development. If you do enable error logging, you should read the error logs and correct the errors if possible, otherwise it is pointless.

CodeIgniter Error Log Info + Errors

From CodeIgniter's docs:

log_message('info', 'The purpose of some variable is to provide some value.');

Informational Messages. These are the lowest priority messages, simply giving information regarding some process. CodeIgniter doesn't natively generate any info messages but you may want to in your application.

Note: In order for the log file to actually be written, the "logs" folder must be writable. In addition, you must set the "threshold" for logging. You might, for example, only want error messages to be logged, and not the other two types. If you set it to zero logging will be disabled.

How to change log file extension in Codeigniter

You can change it by application/config/config.php. Please find below mention code and set your custom extension.

/*
  |--------------------------------------------------------------------------
  | Log File Extension
  |--------------------------------------------------------------------------
  |
  | The default filename extension for log files. The default 'php' allows for
  | protecting the log files via basic scripting, when they are to be stored
  | under a publicly accessible directory.
  |
  | Note: Leaving it blank will default to 'php'.
  |
 */
$config['log_file_extension'] = '';

You can also generate logs depends on your requirement as describe below.

/*
  |--------------------------------------------------------------------------
  | Error Logging Threshold
  |--------------------------------------------------------------------------
  |
  | You can enable error logging by setting a threshold over zero. The
  | threshold determines what gets logged. Threshold options are:
  |
  | 0 = Disables logging, Error logging TURNED OFF
  | 1 = Error Messages (including PHP errors)
  | 2 = Debug Messages
  | 3 = Informational Messages
  | 4 = All Messages
  |
  | You can also pass an array with threshold levels to show individual error types
  |
  |     array(2) = Debug Messages, without Error Messages
  |
  | For a live site you'll usually only enable Errors (1) to be logged otherwise
  | your log files will fill up very fast.
  |
 */
$config['log_threshold'] = 1;

Set custom directory to save your log files.

/*
  |--------------------------------------------------------------------------
  | Error Logging Directory Path
  |--------------------------------------------------------------------------
  |
  | Leave this BLANK unless you would like to set something other than the default
  | application/logs/ directory. Use a full server path with trailing slash.
  |
 */
$config['log_path'] = '';

This will be used to set the permissions to log files.

/*
  |--------------------------------------------------------------------------
  | Log File Permissions
  |--------------------------------------------------------------------------
  |
  | The file system permissions to be applied on newly created log files.
  |
  | IMPORTANT: This MUST be an integer (no quotes) and you MUST use octal
  |            integer notation (i.e. 0700, 0644, etc.)
 */
$config['log_file_permissions'] = 0644;

This will be used to set date format for each log entry.

/*
  |--------------------------------------------------------------------------
  | Date Format for Logs
  |--------------------------------------------------------------------------
  |
  | Each item that is logged has an associated date. You can use PHP date
  | codes to set your own date formatting
  |
 */
$config['log_date_format'] = 'Y-m-d H:i:s';

I hope this will help you.

---

Related Topics