Fix warning: Missing argument

do_action( 'after_setup_theme' ); doesn’t pass any parameter. You are cutting something of the length 0 after theme setup. Why?

Plus, your registration with add_action doesn’t tell WordPress that you want two parameters. The default is one parameter.

You don’t need this call at all. If you define the function in your functions.php it will be available in the loop.

Learn the Plugin API, it isn’t so hard. 🙂

Always prefix you functions. Otherwise your users may get fatal errors when someone else has written a function with the same name.

If your function does what I think it does, you may have a look at my function utf8_truncate(). No regex needed.

Related Posts:

  1. my blog crashes ie7?
  2. Are immediately-called actions not usable in themes?
  3. Undefined offset: 0 in > […] /wp-includes/capabilities.php on line 1067
  4. Loading template files from a subfolder in my theme?
  5. The style.css stylesheet doesn’t contain a valid theme header
  6. Remove action within a class in a parent theme from the child theme
  7. Problem : deletion failed, the theme requested does not exist
  8. Using a _GET gives me a debug error (over my head)
  9. Delete database tables on theme uninstall?
  10. How can I show more than 15 themes at a time in the admin menu?
  11. How to trigger function on theme delete?
  12. PHP Parse error: syntax error, unexpected end of file, expecting elseif (T_ELSEIF) or else (T_ELSE) or endif (T_ENDIF) on line 230 [closed]
  13. wp theme.. Could not create directory
  14. Console error, even if everything is working?
  15. Make it possible to pick a color theme for specific pages
  16. OptimizePress Theme Overriding add_filter page_template
  17. Execute filter in theme as last
  18. Fatal error with a theme
  19. Getting 503 on various files
  20. Redux callback action
  21. How to display message (with switch_theme hook) after deactivating My theme?
  22. What hook is the currently active theme’s functions.php file loaded on? [duplicate]
  23. Finding and disabling ‘rogue’ stylesheet from header: Source Sans Pro
  24. Remove problem PHP code entered into footer via Theme
  25. Twenty Seventeen search error
  26. Is it good practice moving the main stylesheets after the plugin styles?
  27. WordPress suddenly creating theme errors
  28. Debugging in WordPress at Theme installation [duplicate]
  29. Posts as filtered list – expandable
  30. .PO file is found but I don’t see translations: how to debug the problem?
  31. How can I remove all traces of a theme?
  32. Undefined variable error in theme option after updating theme [closed]
  33. Using filter in the widget causes fatal error
  34. Error when installing theme – “failed to open stream: No such file or directory in…”
  35. Functions.php error – when trying to change the theme
  36. My blog suddenly can’t find my stylesheet?
  37. How to fix Scrape key check failed on WordPress VPS?
  38. Why does an ad page open when I browse my websites’s wp-admin page?
  39. Don’t prepend WordPress base url to image paths
  40. Problem: Fatal error worldpress theme
  41. Custom CSS is overwritten by WordPress?
  42. The function is deprecated; use mysql_real_escape_string() instead
  43. Warning: call_user_func() expects parameter 1 to be a valid callback
  44. Firebug and Chrome rendering two body tags
  45. Costum Theme template directoy url problem
  46. How to remove the option data of a theme when that theme is removed?
  47. Diagnosing a connection reset problem
  48. Where can I find the “add_action()” inside a theme?
  49. “Parse error: syntax error, unexpected” and the WordPress Theme Editor no longer working!
  50. WordPress site is not loading properly ( showing a min-page)
  51. How to correctly get post type in a the_title filter
  52. What’s the difference between hooks, filters and actions? [duplicate]
  53. Load a theme based on browser detection
  54. How to avoid loading style.css twice in child-theme?
  55. Generating the ogp tags in theme
  56. WordPress Backup
  57. Problem in theme installing?
  58. Is possible dequeue/remove style from wp_footer() hook and add on wp_head() hook?
  59. Overwriting templates in child theme and performance
  60. Display a specific dynamic sidebar widgets on a specific page
  61. How do I add a TinyMCE row that all users can see, instead of just admins?
  62. Child theme Page Template not loading
  63. Contact Fom 7 – how to add custom HTML inside span.wpcf7-form-control-wrap AND IMMEDIATELY AFTER input.wpcf7-form-control?
  64. Browser back button does not work on firefox and safari [closed]
  65. Call to undefined function add_menu_page() on theme activation
  66. Alternative to the filter comment_reply_link
  67. Different logo on homepage
  68. Translation not working after editing plugin template
  69. Should all references to a text domain be to my current theme?
  70. How to restore file or theme?
  71. A /proc folder in wp-content?
  72. how do i in ignore/disable/delete a javascript call from parent in child theme?
  73. When someone likes an article on my blog, they are prompted to log in on WordPress.com [closed]
  74. WordPress TwentyTen Theme Incompatible with Theme Unit Test
  75. WordPress theme logo handling (Trying to use GIF as logo)
  76. Changing an image in header.php
  77. How to access page variable inside action hook
  78. Installing a theme on localhost, Ubuntu 16.04
  79. Unable to find translations in WordPress theme
  80. How to use add_action for multiple instances of the same class
  81. Will I lose the pages I’ve created within a default WordPress theme when adding a new theme?
  82. WordPress + Buddpyress – troubleshooting server overloading
  83. Adding tables to dashboard pages programmatically?
  84. Is there a way to see how a theme will look before buying it?
  85. Hook to add content after date in post?
  86. i want remove class from post links
  87. share wrordpress data between two shared hosts using REST API
  88. PHP Error in WordPress Theme
  89. Own WordPress theme with custom AFCs > Export all to theme format?
  90. Default and warning messages & no login
  91. Theme customizer hiding sections
  92. Uploaded WordPress theme not finding pages and css
  93. Speed issues because of CSS & JavaScript
  94. Updating theme resets theme options settings and widgets
  95. EM in CSS different size on wordpress then elsewhere [closed]
  96. Add Media + Quick Edit buttons not working
  97. WordPress Theme Problem
  98. wordpress not able to open theme-editor.php
  99. problem with custom url for images as post
  100. Make it easier to add, change, and update pages on existing WP website