by Juliette Reinders Folmer
5 (1 reviews)
Debug Bar Constants
Debug Bar Constants adds three new panels to the Debug Bar that display the defined WP and PHP constants for the current request.
Tested up to WP 4.9 (Current: 7.0.2)
v2.0.0
Current Version v2.0.0
Updated 8 years ago
Last Update on 22 Jan, 2018
Refreshed 8 hours ago
Last Refreshed on
Rank
#25,314
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No change
Active Installs
20+
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KW Avg Position
43.5
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Downloads
53.6K
+2 today
Support Resolved
0%
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Rating
100%
Review 5 out of 5
5
(1 reviews)
Next Milestone 30
20+
30+
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Tracked Keywords
Showing 2 of 2| Keyword | Position | Change | Type | Updated |
|---|---|---|---|---|
| debugbar | 4 | — | Tag | 21 hours ago |
| Debug Bar Constants | 83 | — | Tag | 21 hours ago |
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- Version
- 2.0.0
- Last Updated
- Jan 22, 2018
- Requires WP
- 3.4+
- Tested Up To
- 4.9
- PHP Version
- 5.2.4 or higher
- Author
- Juliette Reinders Folmer
Support & Rating
- Rating
- ★ ★ ★ ★ ★ 5
- Reviews
- 1
- Support Threads
- 0
- Resolved
- 0%
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Frequently Asked Questions
Common questions about Debug Bar Constants
PLEASE DON'T! Amongst the defined constants are your database credentials, so you really do not want to do this. This plugin is only meant to be used for development purposes.
From PHP.net: A constant is an identifier (name) for a simple value. As the name suggests, that value cannot change during the execution of the script. A constant is case-sensitive by default. By convention, constant identifiers are always uppercase. Like super globals, the scope of a constant is global. You can access constants anywhere in your script without regard to scope. For more information on scope, read the manual section on variable scope.
Congratulations! Sounds like you're practicing lean programming (or something is going wrong... ;-) ). The constants you see are the ones available in the current request. If you define constants in a conditionally included file - for instance you only include the file when on a certain page -, these constants will not be available if the conditions have not been met.
See the previous question.
From PHP.net: It is possible to define constant values on a per-class basis remaining the same and unchangeable. Constants differ from normal variables in that you don't use the $ symbol to declare or use them. The value must be a constant expression, not (for example) a variable, a property, a result of a mathematical operation, or a function call.
It's good coding practice to avoid littering the global namespace with your own variables and constants. This is a good way to avoid this.
If your plugin/theme interacts with other plugins and/or themes, you may want to use their constants. Example: A plugin might have their version number saved as a class constant (good practice!). On your part, your plugin may have been set up to only work if the related plugin has been upgraded to version x. In that case, you may want to check other plugins version number before your plugin interacts with it.
if( defined( 'class_name::constant_name' ) ) { // Your code here }
Depending on how lean you've programmed your plugin/theme, your class may not be included (and therefore not be declared) for the page you are viewing. The name of your class may be the same as the name of one of the native/extension PHP classes. PHP is normally configured with a limited number of Extensions. A large number of the available extensions declare classes when they are loaded and the WP Class Constants list is filtered for these classes. It's good practice not to use the names of those PHP native/extension classes for your own classes. Try renaming your class. If that doesn't work, please let me know and I'll have a look at it.
Easy: It's bad practise to name your class the same as one of the PHP native/extension classes. In general, when you're developing a plugin/theme, you are developing for an unknown group of other people with unknown server configurations - including which extensions are(n't) installed -, so you should always make sure that your class will not interfere with any of the PHP native/extension classes.