Truncating characters in Advanced Custom Fields works some places but not others?

It looks to me like the_sub_field echoes content. It is never returned for substr to work on. You need get_sub_field.

$givchars = 5; 
$postgiv = get_sub_field('get_involved_text'); 
$modgiv = substr($postgiv, 0, $givchars); 
echo ' ' .$modgiv. ' ';

Related Posts:

  1. Problem with revisions only returning four results
  2. Advanced Custom Fields: how do I check to see if a value is set in an field? [closed]
  3. Where are custom field values stored in the database
  4. Advanced Custom Fields – Get custom fields from parent page
  5. Add custom field to the archive page?
  6. Matching Serialized Arrays with meta_query
  7. How to position a custom field before the editor
  8. Display post_object content using Advanced Custom Fields plugin
  9. Remove old custom field after import
  10. Unable to get Preview of Uploaded image within a Custom Meta box
  11. Change content before writing to database
  12. Order Custom post type loop by custom field (datepicker)
  13. Using Custom Function With Advanced Custom Fields
  14. Problem with adding exta field in metabox in custom post type
  15. Copying Custom Meta Values from existing post to a duplicate post
  16. Calculate the sum of certain the_sub_fields
  17. Unable to show ACF’s Image Custom Field properly in Genesis Framework [closed]
  18. Login & Register & Custom details WITHOUT plugin
  19. Send Multiple Custom Field Values Through the URL
  20. ACF won’t load from a custom JSON location
  21. Show ACF fields only on certain page in the backend
  22. Update posts after populating ACF field value [closed]
  23. WP Custom Fields Metabox Disappears – ACF plugin issue [closed]
  24. Transfer self made functions.php custom fields to Advanced Custom Fields [closed]
  25. ACF: How to get the full field name (meta_key) by a field key?
  26. Dynamically fill a post custom field with post publish date
  27. How can I store a file in the database in the same way WordPress and ACF do?
  28. Will loading too many ACF Fields cause slow down?
  29. WP_User_Query pulling ACF to loop
  30. Calling the “wp-link-wrap” pop-up modal
  31. Print custom field in Query Loop block
  32. How to add Advenced Custom Fields In Single Post
  33. Order RSS content by an advanced custom field value
  34. Add new image block, set default class name and update it using Javascript
  35. Get an advanced custom field after post publish
  36. How to create a dropdown select of all items in an ACF field group
  37. WooCommerce – Adding Custom Fields To Invoice
  38. Sort custom post type by multiple custom fields
  39. Vimeo thumbnails
  40. Advanced Custom Fields WYSIWYG More tag
  41. Walker class for sub-menu with ACF fields
  42. How to list Category list in ACF Pro’s Select Field to choose from [closed]
  43. Custom fields issue [closed]
  44. Querying posts by latitude and longitude to build a Google Maps with several markers
  45. How to copy data from a custom field to the post_content?
  46. WordPress creates new lines in postmeta table on post update
  47. ul list with only as many li’s as filled custom fields
  48. Retrive Image URL of Custom Fields in Theme
  49. Display custom field from the front page on another page
  50. How to Pass values to Custom Field through PHP in WordPress Posts?
  51. Filter posts by custom field (Advanced Custom Fields)
  52. Advanced Custom fields not available yet during publish_page action
  53. How can I output the custom fields wrapping with HTML
  54. Displaying an ACF list of users
  55. The conditional logic only works to show or hide?
  56. ACF Plugin How to make the customer add more fields in the post?
  57. Custom field Search with Relavanssi
  58. How to get custom image field of specific post id
  59. Need to search a custom field (ingredients, one long string per post), but want it to allow phrases/non-exact matches
  60. How To Save Data From Remote APIs To ACF?
  61. comments_where Hook
  62. Rewrite comment form post ID on submit
  63. ACF field group not showing in page
  64. What am I missing in this Code Block?
  65. How to show ACF fields in Gridbuilder custom block
  66. get_field values for each post on home page using wp_add_inline_style
  67. How to set up page fields with gutenberg instead of ACF
  68. Shortcode for Custom Field of Media Attachment (to use with Featured Images)
  69. ACF multi taxonomy on filterable gallery
  70. Is there any way to make a custom field for a post only if the author is a certain user?
  71. How to use ACF with javascript to update custom field values?
  72. Weird custom fields data lost
  73. adding autosave feature to custom fields
  74. Retrive acf fields in publish_post action for wp_mail
  75. Getting user’s data, by custom field lookup (meta)
  76. How to delete attachments associated with custom field type when post property changes? [closed]
  77. Counting number of images from loop
  78. Page template is missing fields or is invalid when I updating the template
  79. Advanced Custom Fields from Category – IF statement
  80. Query Posts based on custom field value
  81. Using ACF Custom Field value in a URL with do_shortcode() [closed]
  82. display Flexible Fields from options
  83. Display Child Page with custom fields within Parent Page
  84. WordPress taxonomy child image
  85. Filter and display a specific custom field value [closed]
  86. Display different category template if custom field is checked
  87. How to filter post using custom feild value in shortest and longest duration?
  88. Query Posts Via WordPress URL
  89. How to Order Posts by Custom Fields?
  90. Get custom field from other post in carousel
  91. I want to add a custom field in the rss title of each post, but don’t want it to be shown on the site
  92. Update field name without losing the value
  93. Advenced custom fields auto fill problem
  94. Adding custom field to an array
  95. How to get all specific fields from one ACF Group?
  96. save all acf options in one meta_value [closed]
  97. Conditional display based on ACF checkbox
  98. How to add an ACF only for parent term?
  99. Best way for managing images of ads banners
  100. ACF in radio button cf7