如何在 CodeIgniter (PHP)中进行错误日志记录

我想在 PHP CodeIgniter 中进行错误日志记录。如何启用错误日志记录？

我有几个问题:

  1. 记录错误的所有步骤是什么？
  2. 如何创建错误日志文件？
  3. 如何将错误消息推入日志文件(无论何时发生错误) ？
  4. 如何将该错误通过电子邮件发送到电子邮件地址？
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小开

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.

小开
最佳答案

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

小开

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];

小开

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->_errorMsg, 1, ADMIN_MAIL, "Content-Type: text/html; charset=utf8\r\nFrom: ".MAIL_ERR_FROM."\r\nTo: ".ADMIN_MAIL);
小开 
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/

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