constants - Read For Learn

The problem with your $item_info is that the variable is not initialized before your try to append to it. $item_info .= ‘String content’; is the exact same thing as $item_info = $item_info . ‘String content’;, so all you need is to check whether or not this variable exists: if (!isset($item_info)) { $item_info = ”; } … Read more

Where and how to define variables for URLs etc

I believe you can just use site_url() + the path – so for instance: <input type=”hidden” name=”cancelurl” value=”<?php echo site_url(‘/cancel/’); ?>”>

Child theme functions.php file change database entries

You shouldn’t need to change anything in the database. If you’ve set up your child theme correctly, and it appears in the list of installed themes, activating that child theme, should make any updates necessary. The customizations you made back in the day should go in the child functions.php and child style.css. As long as … Read more

Cannot enable WordPress Network – ‘MULTISITE’ already defined and false

Constant defined in header.php not visible in functions.php

Is it better to use a constant or apply_filter?

Many Single Sites, One Plugin directory – adjust plugins_url()

I guess what you are saying is that it then ‘exports’ the wrong system’s xml (I’m not familiar with the plugin) ? Ideally the plugin itself should be including/using the code rather in such a way so that it still knows the context/system in which it is being used irrespective of where the code is … Read more

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Making Site A Use Site B’s wp-content Folder

Notice: Use of undefined constant – assumed ‘ ‘

Notice: Use of undefined constant Redux_TEXT_DOMAIN – assumed ‘Redux_TEXT_DOMAIN’