add_post_meta Adds post meta but the value is blank

If you’re updating a value, you want to use update_post_meta. When you set $unique to true in add_post_meta, nothing will happen if the meta key already exists.

Related Posts:

  1. How to set default screen options?
  2. Add “upload media” button in meta box field
  3. Does WordPress have a “Form API”?
  4. Metabox with checkbox is not updating
  5. Hiding a theme’s meta box
  6. Block metabox – No expanding, no moving around
  7. Access the environment of an admin page from another admin page
  8. Add filter ‘wpautop’ to meta box textarea
  9. add_meta_box does not go ‘side’
  10. Getting jQuery sortable items in custom metabox
  11. How do I stop HTML entities in a custom meta box from being un-htmlentitied?
  12. meta content on required pages
  13. get_post_meta doesn’t work
  14. Dynamically Creating Meta Boxes
  15. Remove border on custom meta box
  16. Create a page Meta Box listing all blog users
  17. remove_meta_box for all post types doesn’t seem to work
  18. Position right sidebar metabox right below the publish metabox?
  19. MetaBox Layout for all users
  20. How to store multiple input values with same meta_key
  21. post-excerpt not one of the options under screen options
  22. How to remove/hide the predictive autocomplete popup when I type in the tag/term metabox
  23. make a excerpt on data from a meta box?
  24. metabox upload file
  25. How to put Periods and Spaces for Array Values (Meta Key)
  26. How to add a SAVE button to replace PUBLISH on a custom post type?
  27. Why does get_post_meta not work with the posts page?
  28. Add_meta_box not appearing, but does appear in screen options
  29. Change the post date from a meta box
  30. update_post_meta and get_post_meta not working
  31. Convert textarea with wp_editor
  32. Repeatable custom meta fields
  33. Get all meta boxes values
  34. Metabox saves on Update or Publish, but not on Saving Draft
  35. metabox with custom post type values
  36. Checkbox on a meta box using CMB2 Plugin
  37. Decide Metabox Configurations for All Users
  38. metabox select – frontend display
  39. Set default post author to none on new post
  40. How to detect if metabox content was updated by the user
  41. how to save and get selected item id list with add_meta_box
  42. Remove anchor tag from meta box link
  43. Adding metabox to wordpress plugins menu page
  44. How to add select list to meta box field?
  45. Get meta fields by meta box id
  46. cannot grab post meta from extended Walker_Category class properly
  47. Resetting admin post form on JS validation fail
  48. Create more Meta Boxes as needed
  49. Condition display metabox in case the post is saved
  50. Save meta value as an array of arrays
  51. Add a meta box to ALL Pages
  52. How to remove some metaboxes for CPTs?
  53. Add metabox without the container
  54. input radio ‘checked’ saves, but select option ‘selected’ doesn’t
  55. wpalchemi metabox doesn’t show value from my post type
  56. HTML Table creator in metabox to put into post theme
  57. How to use Gutenberg in CMB2?
  58. edit_page or edit-pages for current_user_can()?
  59. Editor meta box Showing but not saving
  60. How can i get multi checkboxes value in metbox?
  61. Insert media button will always add into the same tinyMCE editor
  62. Change the title of an Administration Panel
  63. echo the value of a a meta select box
  64. save radio button selection in post-meta on submit
  65. How to display multiple $meta_boxes into separate tables
  66. How to add a textarea to only one of the fields of this custom metabox?
  67. Custom Meta Data is not being saved
  68. how to update post content field in wordpress
  69. How to ‘clone’ select metabox options with a callback function? [closed]
  70. Post and Pages section inside WordPress admin are completely blank
  71. Saving multiple fields (dropdown and text) in custom metabox
  72. How to create a custom metabox like the wordpress provided tag metabox?
  73. Update Post meta with custom variable
  74. display all registered meta boxes
  75. Serving a custom featured image for mobile
  76. update_post_meta doesn’t work
  77. How to hide/show meta box using jQuery,if click on Drop-Down Menu
  78. wp_editor metabox does not output the saved html format
  79. Get value from meta box
  80. Adding Meta Box to Specific Submenu Page
  81. jQuery UI Sortable not Working With Metabox
  82. meta_box: update_post_meta for
  83. Ridiculous problem with CDATA [duplicate]
  84. Issue with file paths after porting metabox from main theme to child theme
  85. Can’t save drop down select date in meta boxes
  86. Custom metabox for file upload return empty filename
  87. Video slideshow
  88. Meta Box Value not saving / populating?
  89. Customer portal (posts as checklist)
  90. How to set default screen options?
  91. Reload meta box content with AJAX
  92. Option to delete value in metabox
  93. why esc_url not working in smartmetabox
  94. Change Default Custom Fields Metabox Name on cctm plugin
  95. How to create metabox that can be queried in the database?
  96. Form submit from modal window to parent window
  97. How to display meta box data using “Meta boxes as needed”
  98. Allow iframe in custom meta box
  99. Datepicker altField and altFormat to save a new meta key/value in a post?
  100. Is there a way to remove the Add boxes from the Screen Options menu metabox?
Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)