You need the $post_id passed in to the function you are calling from the hook. Try making your function declaration like this:
function slider_data( $post_id )
Related Posts:
- Show div only if product has attribute
- WCFM Custom form
- Understanding responsive imagery
- Custom HTML/CSS Theme into WordPress – SEO considerations
- Stop breadcrumb function retrieving custom post type template name
- Dynamic Email Handler with ‘header (“Location: …’
- what is %variable% in a wordpress plugin? [closed]
- Grabbing value of input field inside of array
- Alternative to php echo within code
- Create guest author page via php
- Login user into magento using wordpress account
- Implement OAuth2 in custom plugin
- Slug not being updated using wp_insert_post
- Gutenberg – render_callback does not pass ToggleControl value on frontend
- save array of objects with update_option
- Remove post image caption from post_excerpt();
- What is the best way to reset the site? Different fails while set up
- How do I run the following script from my articles page?
- Failed opening required in PHP
- How to Set Page Pagination Using Ajax JQuery – WordPress
- Prevent users from display default wordpress login form
- login redirect based on user role not work as expected
- redirect user from login page if is logged
- How to pass and validate nonce in custom REST routes
- hello can you advise how to fix the error?
- How to set variable to specific field when querying
- Detecting charcater encoding for wp-config.php file
- Add multiple HTML attributes to an Elementor button
- Redirect users by role to custom pages
- How to hide header and footer from page template
- How to customize content-video.php file in wordpress as is in html file?
- How to lock users account until approvation
- Create custom table for wordpress custom registration flow
- Customize the summary table of an order in the email
- How to get a database field value from a WordPress table? [closed]
- Hide child of parent categories already hidden with “get_terms_args” – Woocommerce
- rest_cannot_create_user – Sorry, you are not allowed to create new users. CURL WORDPRESS REST API
- Divi – add title to mobile menu button
- WooCommerce: write featured image dimensions to custom fields in product’
- The search doesn’t work properly
- Having trouble customizing toolbar on wp_editor
- Cannot install plugins or themes on new WordPress installation at Cloudways
- Changing WP_MEMORY_LIMIT doesn’t affect actual memory limit
- Search results always returns “No results” no matter what
- Load wp_editor on button click
- Custom WP LIST Table filter
- Add attribute to featured image with filter (wp_get_attachment_image_attributes)
- How to enqueue structured data as file – jsonld file seems not to work
- Custom WordPress Function – Adding items from Foreach Loop into an array and Updating Field based on array of IDs (ACF + WooCommerce)
- How can I save a user’s Contact Form 7 inputs as separate columns in a custom WordPress table?
- Query posts by custom taxonomy slug in WP REST API?
- How can I change the URL via add_rewrite_rule()
- oneOf JSON Schema validation not properly working for custom post meta value?
- Suddenly sessions and header location not working
- Custom Navigation Bar JSON Syntax Error in JSON at Position 0
- Variable ++ in query loop
- Generate and upload screenshot as featured image for user-submitted post
- How to conditionally concatenate and translate two very long strings?
- Create custom API endpoint to change custom header image
- Should I use include(_once) or require(_once) for loading php-file with customizer settings?
- How can precision be improved for the debug log timestamp?
- WordPress online courses system
- How to create a WordPress PAGE in another folder?
- bloginfo url in javascript
- 404 after removing “category” base in wordpress
- How do I edit the text in this function.php file?
- Is there a way to get wp_editor (tinymce) content?
- How to align buttons properly [closed]
- index.php file keeps redirecting to a non-existent index.html file?
- how to indicate on post listing title if user already liked this post
- How to limit the number of posts in the wordpress loop in conjunction with the “download more” button?
- wordpress – page not loading (404) even if it’s there
- How to pass parameter to another url?
- How to add Paragraph Tags in WordPress using Visual Composer?
- HTTP 500 Error after Creating Shortcode
- Show button in header when product custom field is not empty
- How to make WordPress search.php display all strings found on pages or posts
- if is specific custom post in cpt
- seo meta description issue in google search
- PHP – Multiple variables in insert post array
- Getting invalid user ID error when creating a new user with wp_insert_user
- get second ID from array
- Exclude Everywhere but Admin Area?
- Why a class property becomes empty?
- Use URL query string in img src attribute
- how to goto specific page number including title with permalink
- Pull latest Youtube Video from json url and make new post
- How to extract URLs from wordpress taxonomies
- Redirect loop upon installation of my plugin
- get_the_term_list give me a whitespace
- advanced custom fields: repeater field within conditional statement [closed]
- Getting a specific “title for a section” only on Startpage?
- Find owner of coupon
- Add topbar to static html page
- Hide category by tag
- Warning: Illegal string offset ‘post’ and ‘page’
- please on skin.php on theme wordpress option fix on theme option to not print empty variables and empty
- Execute multiple PHP Snippets causes error?
- Social Sharing Buttons in Recent Articles List
- Edit Error Page style