I need to create a variable that can be accessed throughout my WordPress Theme template files (index.php, header.php etc..). I know function definitions go inside the functions.php template file (in your theme path), but there’s no such thing for variables. For example I constantly need to retrieve Categories in my Theme, so I would like … Read more
How can $post_id be used while echoing posts in single.php? Is it a global variable? 3 s 3 No, $post_id is not a global variable. You can see a list of global variables WordPress creates here: https://codex.wordpress.org/Global_Variables $post_id is just a common naming convention for a variable that contains a post ID. In tutorials and … Read more
I am trying to understand when and why I should use the global $post variable. I have tried to do the following on a post page, outside the loop, and as expected it works. <?php global $post; echo $post->ID; ?> If I do the same on an archive page (just wanted to see what happens), … Read more
I’ve defined a variable – let’s call it $header_var, which is placed in the header.php file. I would like this variable to be passed onto my template file (in this case taxonomy.php). Also I would like to be able to do the same the other way around, like passing a $template_var from my taxonomy.php to … Read more
The $content_width GLOBAL in WordPress effects many themes and even some plugins by limiting the size of images and embeds in posts, it is a requirement for themes submitted to wordpress.org. It is set by using: $content_width = 584; // Twenty Twelve example If you insert a large image (default 1024×1024) into a post it … Read more
I have a function like this: add_settings_field( ‘contact_phone’, ‘Contact Phone’, ‘settings_callback’, ‘general’); That works. It calls settings_callback. Cool. The problem I have with this is: I don’t want to have to define a callback function for every setting I add, if all I’m doing is echoing out a little bit of stuff. function settings_callback() { … Read more
Setting up a WP multisite instance – the client has an existing ontology / set of categories that they want to classify all content across the set of blogs. Also the desire is that any new categories would be added at the ‘network blog’ level and synced to the other blogs. What’s the best way … Read more
@toscho left a comment to this answer which had me thinking again. How much trust should we have in the global scope, specially regarding the post globals like $post? So what? The global variable can be overwritten from everyone before your check runs. That’s the point of global variables: global access. $post for instance is … Read more
People are often confused about how to get data from global objects/variables Question: In which ways can you inspect global variables? This Q was written because it’s needed pretty often over here at WA. I just wanted to have it as a fav to link over here (people often don’t take a look at github … Read more
UPDATE: My original question has been solved, but this is turning into a valid discussion about why not to use global variables, so I am updating the question to reflect that. The solution was <?php global $category_link_prop; echo esc_url( $category_link_prop ); ?> as @TomJNowell suggested. UPDATE 2: I now have it doing exactly what I … Read more
