is_single() is a function returning a boolean value. You could simply use it for your conditional check rather than passing the global variable.
Other than that, your first line of code should be setting $my_global_var with a single equal sign, i.e.: $my_global_var = true;.
Related Posts:
- Passing variables to templates (alternatives to globalizing variables)
- Global functions on WPMU
- Defining a global array in functions.php?
- Create a new query in function.php to filter blog posts
- How to Use Global Variables Inside Header and Footer
- Getting the teaser text without overriding global variables
- External api call and make global variable for any page visitor enters , page-home, page, single etc
- How to access custom class methods from any include without using global
- Setting a cookie in functions.php and it gets deleted when working on an other function
- Settings in functions.php used by a plugin
- How do I access variables outside a function [closed]
- Missing feature image link function
- What’s the difference between home_url() and site_url()
- Remove “Category:”, “Tag:”, “Author:” from the_archive_title
- get_template_directory_uri pointing to parent theme not child theme
- How to customize the_archive_title()?
- How to set and use global variables? Or why not to use them at all
- remove empty paragraphs from the_content?
- What is the “with_front” rewrite key?
- Why use if function_exists?
- How to override parent functions in child themes?
- wp_enqueue_script was called incorrectly
- Add multiple custom fields to the general settings page
- Ajax call always returns 0
- 400 bad request on admin-ajax.php only using wp_enqueue_scripts action hook
- How long does a deprecated function live in core?
- Solution to render Shortcodes in Admin Editor
- How to add a data attribute to a WordPress menu item
- What’s the difference between esc_html, esc_attr, esc_html_e, and so on?
- remove_action on after_setup_theme not working from child theme
- plugins_url vs plugin_dir_url
- Remove type attribute from script and style tags added by WordPress
- How to run a function every 5 minutes?
- Best way of passing PHP variable between partials?
- Upload Multiple Files With media_handle_upload
- How to display custom field in woocommerce orders in admin panel?
- Adding fields to the “Add New User” screen in the dashboard
- Issues with title-tag and document_title_parts
- How do I get the current edit page ID in the admin?
- How to check if a user exists by a given id
- Why isn’t is_page working when I put it in the functions.php file?
- Add tags to the section via functions.php
- Add image size if page template
- How to create a custom order status in woocommerce!
- Remove Actions/Filters added via Anonymous Functions
- Adding a second email address to a completed order in WooCommerce [closed]
- How to load parent_theme functions.php before child_theme?
- How to load scripts/styles specific for a page
- Programatically add options to “add new” custom field dropdown
- Is there any global functions.php file which works for any theme?
- Excluding iPad from wp_is_mobile
- When should you, and when should you not, use wp_list_pluck()?
- Get the ID of the page a menu item links to?
- Add container to nav_menu sub menu
- Difference between the_permalink() and get_permalink() function
- What’s the difference between WordPress random_int() and PHP built-in function random_int()?
- Child theme – Overriding ‘require_once’ in functions.php
- Link to user’s profile settings page?
- WordPress Enqueue for homepage only, functions.php, wp-framework
- get php variable from functions php and echo it in theme template files [closed]
- Get menu object from theme_location
- Is it ok to use a function to output the text domain name in a wordpress theme
- Displaying the number of updates available in the Admin area
- Trying to use add_action and do_action with parameters
- Use AJAX in shortcode
- Set JPEG compression for specific custom image sizes
- Can the new 4.8v text widget visual editor be removed?
- Prevent “main” WPMU site_url() being returned in functions
- Include files in child theme functions file
- Memorizing syntax
- Custom page with variables in url. Nice url with add_rewrite_rule
- Define page template in wp_insert_post
- Which WP functions do you need to use esc_html() or esc_url() on?
- Check if post is being published for the first time, or is an already published post being updated
- Display random categories on the front page (Finding and Editing Theme Functions)
- How to redirect to post if search results only returns one post
- remove links from images using functions.php
- Order posts (across the whole site) by metadata date
- Use author author display name in permalink structure for pages and posts
- Is it possible to rename a post format?
- Why does WordPress have private functions?
- Import WordPress XML File from Within Functions.php
- What is this code in my theme’s functions.php? if (isset($_REQUEST[‘action’]) && isset($_REQUEST[‘password’])
- Get list of years when posts have been published
- Add custom template page programmatically
- What is the correct MIME type for PSD (Photoshop)
- Redeclare a function in a child theme
- What is the difference between get_page_link and get_permalink functions?
- What’s the difference between admin_url() and get_admin_url() functions?
- Define custom Page Template without its own .php file
- Possible to search by author name with default WordPress search function?
- Does hooking into the same action multiple times drain memory?
- How to use the do_action () with parameter
- Add class to menu items of one specific menu (nav_menu_css_class)
- Perform an action when post is updated/published
- Advantages and disadvantages of using automatic-feed-links
- Include PHP file in Content using [shortcode]
- Sort posts by Date (DESC) and by Title (ASC)
- Remove a menu item created by a plugin
- paginate_links() don’t properly work in search.php?