Debugging WordPress Core and Plugins!
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Transcript of Debugging WordPress Core and Plugins!
![Page 1: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/1.jpg)
Debugging WordPressCore & Plugins!
@bronsonquick
![Page 2: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/2.jpg)
Overview
@bronsonquick
● Who Am I?
● Why Debugging Is Important
● Quick Debugging Wins
● WordPress Constants For Debugging
● Issues With Constants
● Chassis
● WordPress Plugins For Debugging
● Query Monitor
● Interactive Debugging
● Xdebug
![Page 3: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/3.jpg)
Who Am I?
@bronsonquick
● Senior WordPress Developer
● Core Contributor
● Occasional WordPress Podcaster - WP Dev Table
● Maintainer Of Chassis
● Occasional WordCamp Organiser - WordCamp Gold Coast
& WordCamp Brisbane
● Massive Smashing Pumpkins Fan
● Vinyl Addict
● Guitar Fan
![Page 4: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/4.jpg)
Why IsDebugging Important?
@bronsonquick
![Page 5: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/5.jpg)
![Page 6: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/6.jpg)
Quick Debugging Wins
@bronsonquick
![Page 7: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/7.jpg)
define( ‘WP_DEBUG’, true );
@bronsonquick
![Page 8: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/8.jpg)
define( ‘WP_DEBUG_LOG’, true );
debug.log
@bronsonquick
![Page 9: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/9.jpg)
define( ‘SCRIPT_DEBUG’, true );
WordPress will use the "dev" versions of core CSS and JavaScript files rather than the minified versions.
@bronsonquick
![Page 10: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/10.jpg)
define( ‘SAVEQUERIES’, true );
Saves the database queries to an array and that array can be displayed
to help analyze those queries.
@bronsonquick
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var_dump( $wcsc2016 );
echo( $wcsc2016 );
@bronsonquick
![Page 12: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/12.jpg)
Issues With That Approach
@bronsonquick
● z-index issues - WordPress admin & themes
● Admin Ajax calls
● XML-RPC
● Cron jobs
● RSS Feeds
● REST API
● ….
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Chassis
@bronsonquick
● Chassis - A Virtual Machine For WordPress Development
https://github.com/Chassis/Chassis/
● Docs - http://chassis.io/
● VirtualBox - https://www.virtualbox.org/
● Vagrant - https://www.vagrantup.com/
● Zeroconf networking (Bonjour)
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Demo!
@bronsonquick
![Page 15: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/15.jpg)
Improving Debugging With Plugins
@bronsonquick
● Debug Bar - https://wordpress.org/plugins/debug-bar/
● Debug Bar Extender - https://wordpress.org/plugins/debug-bar-extender/
● Debug Bar Cron - https://wordpress.org/plugins/debug-bar-cron/
● Debug Bar Transients - https://wordpress.org/plugins/debug-bar-transients/
● Log Deprecated Notices - https://wordpress.org/plugins/log-deprecated-notices/
● Rewrite Rules Inspector - https://wordpress.org/support/view/plugin-reviews/rewrite-rules-
inspector/
● Developer - https://wordpress.org/plugins/developer/
![Page 16: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/16.jpg)
Demo!
@bronsonquick
![Page 17: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/17.jpg)
Query Monitor
@bronsonquick
● Query Monitor - https://wordpress.org/plugins/query-monitor/
● Query, Caller, Component
Function - Core, Plugin & Theme
● HTTP Requests..
● Hooks & Actions That Are Fired
● HTTP Header Added - X-QM-Redirect-Trace
● Ajax Debugging (jQuery) - Clickable stack trace in your console
● Number Queries Performed, Slow Queries, Queries with errors, Memory Usage, Time
Taken, PHP Version, MySQL versions, Request Parameters, Clickable Stack Traces
● REST API Debugging
![Page 18: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/18.jpg)
Demo!
@bronsonquick
![Page 19: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/19.jpg)
Xdebug
@bronsonquick
● Xdebug Extension For Chassis - https://github.com/Chassis/Xdebug/
● PHPStorm
● Variable Inspection
● Set Breakpoints
● Step Into, Step Over
● Watches
![Page 20: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/20.jpg)
Demo!
@bronsonquick
![Page 21: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/21.jpg)
Questions?
@bronsonquick
![Page 22: Debugging WordPress Core and Plugins!](https://reader033.fdocuments.net/reader033/viewer/2022051503/5872baac1a28ab523c8b77ad/html5/thumbnails/22.jpg)
Thanks!
@bronsonquick