Enabling and disabling PHP error logging using an .htaccess file

The log_errors directive in PHP controls whether error messages are logged to a file. The error_log directive specifies the location of the log file. On ruachost.com, you can configure these settings in a custom .htaccess file when you don’t have direct access to php.ini.

Why Manage Error Logging?

• Enable logging: Capture errors for debugging and troubleshooting.
• Disable logging: Reduce disk usage or prevent unnecessary logs in production.
• Security: Keep error details out of public view while still recording them privately.

Steps to Configure Error Logging in .htaccess

Step 1: Access Your Hosting Account

• Log in to cPanel or use FTP/File Manager.
• Navigate to your site’s root directory (e.g., /public_html).

Step 2: Create or Edit .htaccess

1. If .htaccess already exists, open it for editing.
2. If not, create a new file named .htaccess.

Step 3: Add Directives

✅ Enable Error Logging

php_flag log_errors On
php_value error_log /home/USERNAME/logs/php_errors.log

• Replace /home/USERNAME/logs/php_errors.log with the full path to your desired log file.
• Ensure the directory exists and is writable.

❌ Disable Error Logging

php_flag log_errors Off

Step 4: Save and Verify

1. Save the .htaccess file.

2. Create a test file with an intentional error:

   <?php echo $undefined_variable; ?>

3. Load it in your browser.

   • If logging is enabled, check the log file for entries.
   • If disabled, no new entries should appear.

Important Notes

• Not all hosting environments allow PHP directives in .htaccess. If unsupported, use php.ini or .user.ini.
• Incorrect syntax in .htaccess can cause 500 Internal Server Errors.
• Always back up your .htaccess file before making changes.

Best Practices

• Keep logs outside the public web root for security.
• Rotate or clear logs regularly to prevent large files.
• Use display_errors = Off in production to avoid exposing sensitive details.