Array to string conversion error when trying to POST multidimensional array

<select name="year[0][name]" id="year_0_name" ...

The variable “year” is a variable already used by the WordPress query system.

Take a look at the top of the file where you see “$public_query_vars” to see the ones WordPress is already using and expecting to be something different than what you’re sending to it.

Use different variable names than those. I would recommend prefixing all your variable names with something unique to your specific case, so as to avoid these sort of conflicts.

Related Posts:

  1. Adding a Taxonomy Filter to Admin List for a Custom Post Type?
  2. Redesigning Custom Post Type “Add New” page
  3. How to get a variable number of posts per post type on the main loop?
  4. How Do I Use The WordPress Plugin Posts 2 Posts by Scribu?
  5. Creating a default Custom Post Template that a Theme can override
  6. Jetpack plugin (ShareDaddy): Prevent share buttons showing on custom post types?
  7. Getting Custom Post Type content from main-site of a Multisite
  8. Custom database or Custom Post Types?
  9. Custom comment type maybe?
  10. Prevent page slug from interfering with custom post type archive permalink?
  11. Add .html extension to custom post type taxonomies
  12. How to load a new template page according to a particular URL?
  13. Twillio How To Send SMS for Custom Post Type
  14. How to get the custom page get_permalink?
  15. Seriously stuck with some custom meta box/plugin stuff
  16. Themes VS Plugins [duplicate]
  17. Enable comments for post with comments meta box removed
  18. How to Build a Movie Library in WordPress 3.x
  19. Custom Post Type causes Page Not Found
  20. How do I get multiple pages by title?
  21. I need to add a custom “cover” to every new post — plugin or custom setup?
  22. Plugin “Meta Box”: Implementing meta boxes in custom post type
  23. Plugin allowing for artists, events and venues
  24. Disable Other Plugins on my Custom Post Type?
  25. How to get images from EDD post?
  26. custom taxonomy and custom post type url conflict
  27. Allow users mark posts as “complete”?
  28. Is there a way to order posts and custom post types as one group?
  29. RW Meta Box ,Problem setting post title
  30. Saving Custom Post types and fields to a custom table
  31. Building a store locator with google maps
  32. Duplicate posts when posting nulls in records in phpMyAdmin [closed]
  33. How to create user groups and allow custom posts and plugin modify/access to specific group?
  34. Exclude post by custom meta with pre_get_posts
  35. How can I create a custom shortcode that will return a custom post type by ID?
  36. get_post_type on post.php
  37. All of my custom posttypes are 404’ing
  38. ‘No Results Found’ on single post for custom post type
  39. Keep a post copy when this one is updated – issue
  40. Making a Template for a CPT created by a plugin
  41. how to add a button next to the wordpress view button?
  42. Adding CSS to custom post type admin page causes error
  43. ACF: post query, hide duplicate values [closed]
  44. Redirect to another page using contact form 7? [closed]
  45. Custom setup of wordpress comments that are displayed
  46. WordPress custom taxonomy not showing
  47. Using ACF default value to autoincrement a number field
  48. Amazon.com intergration with WordPress?
  49. Sticky option for custom post types without using custom fields or plugins
  50. Adding custom meta boxes to specified custom post type
  51. How do I make reusable content blocks for header and footer when using WordPress headless with another front-end?
  52. Preview with Custom Post Type Not Working
  53. How can I store data from custom fields to custom tables?
  54. 2 wordpress site same database
  55. How to Include Custom Post Content From Plugin
  56. Custom post type change excerpt more and excerpt length
  57. What hook can I use to modify custom post data before it is displayed on the page?
  58. Order posts of a custom post type by the event date using FT Calendar Plugin
  59. Creating teams of users in WordPress
  60. Custom Post Type template for homepage
  61. hardcoded wp pages/plugins problems
  62. How display specific category post to specific users?
  63. Best method of implementing compartmentalized custom post types on a multi-site network
  64. Need to edit author permissions | custom taxonomy
  65. Is it possible to pin a post in second position from top
  66. How to search post titles with whole words only, but not the exact word only?
  67. Save log for imports in WordPress database – options-table, custom post type or other place?
  68. Remove custom taxonomy name from the slug – Custom Post Type UI
  69. How to display emails as a post?
  70. Error in Fetching Custom Post Type parent Category URL (slug)
  71. Register PODS Custom Field with WPGraphQL [closed]
  72. Hidden permalink different from displayed permalink
  73. Adding custom post category to categories widget
  74. Custom Post Type with Sequence ID
  75. Add an action based on custom post meta field
  76. How to arrange custom posts in the backend/admin by custom taxonomy
  77. Adding LOAD MORE on a page
  78. custom post type get_posts() function not work
  79. Create multiple posts when a custom post is created
  80. how to convert frontpage.php to dynamic page?
  81. Cannot view Custom Post Type no matter what I try
  82. Creating custom “player-objects”
  83. Hide some portion on single.php base on author
  84. Displaying image from a repeatable group
  85. CPT-onomies CPT_TAXONOMY->get_terms extremely slow with 6K posts
  86. get recent 12 days post then random in wordpress
  87. What method should I use for a sidebar widget that reads latest posts?
  88. Making a Custom Post Type Publish Loop
  89. WordPress User Frontend Editing Custom Fields
  90. How to list the categories by custom taxonomy created?
  91. Is a custom post type considred a plugin?
  92. Remove base from the custom post type URL [duplicate]
  93. Make a magic tag work with Custom Post Types
  94. How to laod wp_enqueue_style to another header i created my self
  95. Looking for a plugins for organization portal (Staff, Units, Departments)? [closed]
  96. Filter custom post type returned from REST api
  97. Wrong block appender button showing
  98. Select posts from list and add them in a new list
  99. Failed to update a post when I add a taxonomy to it
  100. How to make content as required in custom post type?
tech