Group Posts By Custom Meta Value: Date

The only built in way ( using a function) is to use WP Query and the custom field parameters, specifically meta_query and compare.

http://codex.wordpress.org/Class_Reference/WP_Query#Custom_Field_Parameters

An example to get you started:

$query = new WP_Query( array( 'meta_key' => 'your_date',  'meta_compare' => '=' ) );

Alternatively, the custom field functions in WordPress do not have many parameters, they are basically for adding and retrieving data, which you can then use with native PHP, for instance you can return the custom field as an array using something like:

$meta_date_array = get_post_meta($post_id, $key, false);
ksort($meta_date_array);

and use PHP’s ksortto sort the order.

Related Posts:

  1. Ordering posts by anniversary using only day and month
  2. Displaying posts with only upcoming dates according their custom field date value
  3. Ordering posts by custom field named “date” in backend
  4. Can I exclude a post by meta key using pre_get_posts function?
  5. Custom post meta field effect on the performance on the post
  6. How to get custom post meta using REST API
  7. Difference between meta keys with _ and without _ [duplicate]
  8. Orderby meta_value only returns posts that have existing meta_key
  9. What is the index [0] for on post meta fields?
  10. What is “meta_input” parameter in wp_insert_post() used for?
  11. How to enable revisions for post meta data?
  12. The “_encloseme” Meta-Key Conundrum
  13. Best way to programmatically remove a category/term from a post
  14. Using get_post_meta with new_to_publish
  15. Custom field metabox not showing in back-end
  16. So much data in postmeta
  17. Can I count the number of users matching a value in a multiple value key?
  18. When using add_post_meta and update_post_meta, is there any way to give the individual arrays keys?
  19. How to hide meta box values from custom fields list?
  20. Auto sort the wp-admin post list by a meta key
  21. get_post_meta() unserialize issue – returns boolean(false)
  22. What is the advantage of the wp_options design pattern?
  23. Storing meta fields multiple times OR once with multi dimensional array?
  24. Allow user to create instances of custom field
  25. display specific custom fields
  26. Is there a hook / action that is triggered when adding or removing a post thumbnail?
  27. Date, Time, and Timezones
  28. Meta keywords and descriptions plugin for manually editing meta for each page/post
  29. passing argument to get_template_part() or a better way to code
  30. Is it possible to store arrays in a custom field?
  31. Get updated meta data after save_post hook
  32. Multiple meta values for same meta_key adding on “Preview Changes” hit but not on saving or updating post
  33. Save HTML formatted data to post meta using add_post_meta()
  34. importing data from non-wordpress mysql db
  35. Order by custom field date?
  36. Order by custom field date with ASC order
  37. Create meta boxes that don’t show in custom fields
  38. Transients vs CRON +Custom Fields: Caching Data Per Post
  39. Unable to save datetime custom meta field using update_post_meta() function
  40. Up/Down voting system for WordPress
  41. post meta data clearing on autosave
  42. Create custom field on post draft or publish?
  43. Display info from custom fields in all images’ HTML
  44. get_post_meta fields don’t show up on posts page
  45. Update meta values with AJAX
  46. How to break meta values into different items and avoid duplicates?
  47. Localized Date Format for Custom Field
  48. copy attachments to another post type and change attachment url
  49. Cannot edit post meta fields with rest API
  50. ajax delete value from custom field array
  51. Save attachment custom fields on front end
  52. How to use pagination with get_post_meta
  53. Copying Custom Meta Values from existing post to a duplicate post
  54. Add a post meta key and value only if it does not exist on the post
  55. How can I query on the year part of a complete date in a custom field?
  56. Move value of one custom field to another
  57. Order posts according to user defined order for meta values?
  58. Custom fields to save multiple values
  59. Custom fields: In what order are they saved into the DB?
  60. Function to change meta value in database for each post
  61. Get a post_id where meta_value equals something in a serialized meta_value field
  62. Get aggregate list of all custom fields for entire blog
  63. Transition from (classical) serialized custom meta field to (gutenberg) rest enabled meta
  64. Unable to show ACF’s Image Custom Field properly in Genesis Framework [closed]
  65. Custom field value based on other custom field values
  66. wp_handle_upload error “Specified file failed upload test” but still creates attachment?
  67. How to save a ToggleControl value in a meta field?
  68. Which is best in the following scenario : post_meta vs custom table vs parent/child posts
  69. Saving custom image meta fields
  70. Author Page Custom Query WHERE author OR [post meta value] OR [post meta value]
  71. How to display Meta Field Value?
  72. MySQL query to set wp_postmeta using term_taxonomy_id value
  73. How to Validate Post Meta type/extension (Video File Image File etc)
  74. Get all meta keys assigned to a post type
  75. using multiple meta_key and meta_value in query_posts
  76. Custom Meta Box not Saving in Posts with Gutenberg Editor
  77. Adding custom fields (post meta) before/during wp_insert_post()
  78. Combine multiple custom field values into single value
  79. How can I sort homepage by a meta value?
  80. Get specific custom field keys from a post and put into an array
  81. How do I use wp_query for WordPress search?
  82. Nav Menu – Add class based on meta keys
  83. How to query posts with certain custom meta data, and output Post data
  84. MySQL Query that looks for post with Custom Field, then changes Category
  85. ACF: How to get the full field name (meta_key) by a field key?
  86. How to wrap meta values seperated by comma in ? [closed]
  87. Bulk remove post meta
  88. post meta getting deleted on save
  89. How to create html block to display extra information on woocommerce single product page
  90. Can’t get post ID using wp_insert_post_data
  91. Unique Post Meta Values
  92. Create Multiple File Upload Metabox in WordPress
  93. filtering custom post types via meta data drop down
  94. How to add a new meta key and assign timestamp to posts
  95. Run a check for multiple meta key values
  96. If meta key exists in get posts function otherwise create it
  97. Custom field not updating when value is empty
  98. meta_compare seems to be treating values as strings instead of integers as expected
  99. WordPress Rest API to call page data associate with custom meta
  100. Limit the number of acf content when displaying in post loop [closed]
Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)