Error logging in PHP
One of the most important tasks of any developer is to know what errors occur in his application, because it is impossible to fix them if you don’t know if they exist in the first place. Although you may think that your application is perfect and bugs free, you can never be 100% sure because users might not operate the application in the way you expect them to. And this is when error logging come in, where you record any errors that users encounter in a log file which can be used to improve your application. In PHP, you can control how errors are handled and reported. The following is an example of how errors may be logged:
// Error Reporting settings
ini_set('error_reporting', E_ALL ^ E_NOTICE); // log all errors except notices
ini_set('log_errors', true); // enable error logging
ini_set('html_errors', false); // disable html errors
ini_set('error_log', '/home/directory/to/your/error_log.txt'); // save all the errors to a log file
ini_set('display_errors', true); // do not display errors on screen
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