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    Make WP_DEBUG log to custom file

    Make WP_DEBUG log to custom file

    WordPress is one of the world’s most popular content management systems and – fortunately – it comes equipped with a built-in debugging functionality. However, the option is not available from the admin panel and you have to do some file editing to make it work. When debugging WordPress the WP_DEBUG option can be really helpful. You can see error 500 message details or deprecated methods from an old PHP version.

    WP Debug Configuration

    To show debug details directly on the website, add / edit this line in your wp-config.php file:

    define('WP_DEBUG', true);

    To log messages to file /wp-content/debug.log  (standard location)

    define( 'WP_DEBUG', true );
    define( 'WP_DEBUG_LOG', true );
    define( 'WP_DEBUG_DISPLAY', false );
    @ini_set( 'display_errors', 0 );

    To log a message to a custom file:

    define( 'WP_DEBUG', true );
    define( 'WP_DEBUG_LOG', 'wp-content/my_debug_file987.log' );
    define( 'WP_DEBUG_DISPLAY', false );
    @ini_set( 'display_errors', 0 );

    Summary

    Using a custom debug file name is recommended due to security measures. After finishing debugging, remember to disable WP_DEBUG and delete .log files from the server.

    Next Step

    Need a more powerful debug tool? Query Monitor is a plugin that enables debugging of database queries, PHP errors, hooks and actions, More info at: https://wordpress.org/plugins/query-monitor/

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    As a passionate group of professionals with a love for Web and mobile technologies, we have been successfully serving our clients for the past 15 years. Through these years we have continuously striven to create the best IT solutions our clients seek.

    Our 70+ developer team creates cutting-edge complex B2B and B2C web systems and apps as well as delivers top-notch direct outsourcing services.

    We work in multiple frameworks but we hold special feelings and are experts in PHP (Symfony, OXID, WordPress), JavaScript (React, AngularJS), Flutter and Blockchain. We do enjoy working in the scalable cloud environment like AWS.

    We are located in Warsaw, Poland, in the heart of Europe. Concentrated on delivering durable web solutions of high integrity, we do not always try to be the cheapest. However, thanks to our location you will be surprised how reasonable our prices are.

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