Change page title from page using php via php executed from page/post itself

Put it in functions.php or at the top of the header.php in your theme. What I suspect is that the wp_title() method in header.php is already executed by the time your add_filter() is called.

Related Posts:

  1. Filter the blog title displayed in the header
  2. “Maximum function nesting level of ‘100’ reached” after adding a new filter
  3. Filter get_the_title to remove certain characters?
  4. Remove the first 5 characters of the_title and orderby that
  5. How to display custom seo title before the loop?
  6. Custom field in title
  7. Apply class to every paragraph that holds image?
  8. How to change the wp-login.php page title?
  9. Hide custom image sizes from media library
  10. Set media upload attachment link to none and hide it in WP v3.5
  11. How to set custom cookies before output
  12. How to count the length of a post title?
  13. How can I hook into and edit the text of a wp_nav_menu tag?
  14. Rename image uploads replacing “width” and “height” in filename with “medium”, “large”, “small”
  15. Rename image uploads with width in filename
  16. How to make an meta_query optional?
  17. Check if page parent has certain template
  18. How to remove “out of stock” variation options from size dropdown in woocommerce?
  19. wp_get_attachment_url filter won’t accept two arguments
  20. Why do filters/actions require an argument count?
  21. Filter link to existing content suggestion
  22. Getting my head round WordPress filter
  23. How to set a custom path, for ajax image upload folder in admin?
  24. Browser title script ignoring is_page /else conditional [closed]
  25. Blank space at beginning of tag?
  26. get_page_by_title with an apostrophe in variable
  27. Get posts with at least one category in common with current post?
  28. How to use return in my custom function instead of echo
  29. When using the_author hook, how can I determine the PHP file that generates each call to `the_author()`?
  30. Locating Global Variables
  31. WordPress php filter admin_body_class not working
  32. Set post title based on first h2 element in the content section
  33. An extra ‘ is displayed in the title
  34. Combine two filters into a single call
  35. Remove a filter added by a plugin
  36. Change the site tagline (or similar) based on current page
  37. Handling Body class based on Template
  38. WooCommerce Related Products by Attribute
  39. Add a class to the anchor tag on HTML5 gallery
  40. add_action shortcut?
  41. How to control WordPress image metadata (using Imagick)?
  42. Show prices with tax in Woocommerce Mini Cart [closed]
  43. Ajax category filtering products default show all
  44. Add a specific part of current category page url to shortcode
  45. Removing “wpautop” (auto tags) only on certain pages?
  46. Print last modified date only on posts
  47. WordPress Gravatar filter is removing my custom attributes
  48. Change title only in dynamic page
  49. Display custom post type title as text if post thumbnail is not available
  50. How to debug this search & replace strings snippet?
  51. Hide Featured Image Meta Box on Editor Screen
  52. Add item to top of menu using a filter in functions.php
  53. How to make modifications only to certain elements of an HTML string on the server-side?
  54. Run str_replace on title and save the output to a custom field
  55. Echo title attribute php
  56. Add meta tags to a custom header
  57. Ajax filter button display all posts
  58. How to append to an array and return the results in a filter?
  59. woocommerce related product title length
  60. Custom query vars filters problem with pagination
  61. Filter by field with array value in ACF on WP REST API
  62. wrap a span tag around author’s post count
  63. Must filter functions receive all arguments passed to them?
  64. Filter wordpress posts without searching the keywords in the post content
  65. Variation prices breakdown only for single product page
  66. Test the existence of a page/article by its URL, taking in consideration the URL rewriting by filters
  67. Filter ‘comment_notification_text’ not working
  68. Remove Author Links
  69. How to remove get_header From all single pages in wordpress with functions.php without plugin?
  70. Apply function.php filter only if url not has /amp/
  71. Change lost password url to a mailto URL in WordPress
  72. How to edit post meta data before publishing the post it self wordpress?
  73. Multiple Tag Filtering
  74. Add a top bar to a wordpress theme without editing the header.php file?
  75. Should I set a page as “No-index” if I include it’s content within the front-Page.php via this method?
  76. How to change href of a Widget menu item link?
  77. Reload page with a different shortcode when a user selects from a dropdown
  78. WordPress Ajax filter: Create two loops for different output styles?
  79. How to disable sub menu items from being created?
  80. How can i style “echo apply_filters”
  81. Adding body class to html tag that already has language attrubutes?
  82. Put a span class in the shortened product title
  83. How to remove title tag with this filter
  84. str_replace not preserving whitespace
  85. “Page Array” displaying in title bar on Front Page
  86. Custom theme: adding unwanted tags in the content
  87. Apply filters when loading post via ajax
  88. Get terms of the posts with one query
  89. Woocommerce Price Text
  90. Limit Taxonomy Parents
  91. dynamically filter by category via sub-menu
  92. Display a list of users with avatar filterable with alphabets
  93. How to add custom checkout field in user details mail template
  94. Keeping the previous get value and add another value when submitted
  95. For each loop will not append to the_content hook
  96. Assign new post author IF another user in custom field on post transition
  97. Modify meta data before saving to database
  98. How to change wp-admin and wp-login urls
  99. How to add different menu items on different menus?
  100. Custom Filtering date with newsletter