Find or list all constants used in a PHP file

Question

How to manage constants?

I am using zencart for my site.

I add all global constants in:

includes/languages/english/english.php

and my contants use in any of my pages, such as:

includes/modules/meta_tags.php

The problem is that some days I delete a constant from any php file, but I dont remove it in english.php.
Time after time, I dont know what constants in english.php are in use and where are they used.

Is there any way to know what constants are used in a php file?

<?php 
    // includes/languages/english/english.php
    define('HELLO','hello');
    define('WORLD','world');
?>

<?php 
    // includes/modules/meta_tags.php
    echo HELLO;
?>

<?php 
    // includes/modules/product_listing.php
    echo WORLD;
?>

An editor like PHPStorm has the capability to help you follow where variables are declared, set, and read. However I don't think it can even deduce constants, but it does have project wide file search for which you can search for 'HELLO' etc — Mark Fox
– Mark Fox, Commented Jul 3, 2013 at 2:20

alex · Accepted Answer · 2013-07-03 02:20:27Z

3

PHP has a function for every task known to mankind.

This includes the get_defined_constants() function.

answered Jul 3, 2013 at 2:20

alex

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1 Comment

user229044 Over a year ago

PHP's greatest strength and greatest weakness :p

goat · Accepted Answer · 2013-07-03 03:01:34Z

1

some ides, like netbeans, phpstorm, and probably many others have features like "find usages" and "refactor" which are really useful when renaming/updating/deleting, and they support constants.

this doesn't tell you "what comments are used in a specific file", but, i'm guessing its useful to you for similar purposes.

edited Jul 3, 2013 at 3:01

answered Jul 3, 2013 at 2:54

goat

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