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_posts/10-07-01-Error-Reporting.md

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+---
+isChild: true
+anchor: error_reporting
+---
+
+## Error Reporting {#error_reporting_title}
+
+Error logging can be useful in finding the problem spots in your application, but it can also expose information about 
+the structure of your application to the outside world. To effectively protect your application from issues that could 
+be caused by the output of these messages, you need to configure your server differently in development versus 
+production (live).
+
+### Development
+
+To show every possible error during <strong>development</strong>, configure the following settings in your `php.ini`:
+
+    display_errors = On
+    display_startup_errors = On
+    error_reporting = -1
+    log_errors = On
+
+> Passing in the value `-1` will show every possible error, even when new levels and constants are added in future PHP versions. The `E_ALL` constant also behaves this way as of PHP 5.4. - [php.net](http://php.net/manual/function.error-reporting.php)
+
+The `E_STRICT` error level constant was introduced in 5.3.0 and is not 
+part of `E_ALL`, however it became part of `E_ALL` in 5.4.0. What does this mean? 
+In terms of reporting every possible error in version 5.3 it means you must 
+use either `-1` or `E_ALL | E_STRICT`. 
+
+**Reporting every possible error by PHP version**
+
+* &lt; 5.3 `-1` or `E_ALL`
+* &nbsp; 5.3 `-1` or `E_ALL | E_STRICT`
+* &gt; 5.3 `-1` or `E_ALL`
+
+### Production
+
+To hide errors on your <strong>production</strong> environment, configure your `php.ini` as:
+
+    display_errors = Off
+    display_startup_errors = Off
+    error_reporting = E_ALL
+    log_errors = On
+
+With these settings in production, errors will still be logged to the error logs for the web server, but will not be 
+shown to the user. For more information on these settings, see the PHP manual:
+
+* [error_reporting](http://php.net/manual/errorfunc.configuration.php#ini.error-reporting)
+* [display_errors](http://php.net/manual/errorfunc.configuration.php#ini.display-errors)
+* [display_startup_errors](http://php.net/manual/errorfunc.configuration.php#ini.display-startup-errors)
+* [log_errors](http://php.net/manual/errorfunc.configuration.php#ini.log-errors)