Custom search page and search by title, content and tag

Search in WordPress is complicated matter because:

  1. WP doesn’t do it very well out of the box
  2. People tend to have varied expectations of how precisely search should work
  3. Even light (from human perspective) requirements for search tend to translate in complicated and involved code

Building search from scratch is involved (I know because I did exactly that for a while for clients) and you should totally look for search plugins or other compromise (like search as service) first.

To briefly enumerate specific issues with your code:

Related Posts:

  1. Retrieve and display data from custom db table in admin area?
  2. How to find if a post with custom_field == X exists?
  3. Hi, I wanted to make custom search with multiple fields
  4. $wpdb->replace: WHERE?
  5. Admin search post meta
  6. Custom Loop Query For Search Page
  7. Applying WP-cli Search & Replace to Static SQL Dump File
  8. Custom Same Page Search
  9. How to Add Additional Search Button?
  10. WP Search Form Query: Add Author’s posts into search query
  11. Adding overlay search to wordpress using add action/filter
  12. Search a meta field for a value in all posts
  13. Search widget will search everything in the site, how to limit to only search gallery name
  14. wp_query get post custom taxonomy in search.php
  15. Order posts with a custom field but also without
  16. How to hook up search results page to a back-end page?
  17. How to use default WP form elements to interact with custom DB table?
  18. Save title as custom field on custom post type
  19. Combine two conditions in one statement syntax [closed]
  20. Your thoughts on the interaction with one custom database table from WP?
  21. Add content in between of foreach
  22. Add a searchbox to the body of a page
  23. Custom Search on Custom Page while preserving the main search function
  24. Search URL parameters query [duplicate]
  25. Custom SELECT Query With Multiple Meta Values (Ordering Problem)
  26. Get users based on month ACF datepicker field
  27. How to create custom search page
  28. Setup database structure with books, authors, languages etc. for publishing house [closed]
  29. Query for specific custom field
  30. Dynamically Filtering Posts by Data Points – Any Pointers?
  31. Add table to WordPress database
  32. Custom search query by category id
  33. Display posts by combining multiple meta key
  34. How to append custom text to the output of ‘categories widget’?
  35. Custom select query two tables by a meta key
  36. Fatal error Call to a member function insert() on a non-object [closed]
  37. custom user meta query
  38. Recent activity query WordPress
  39. How to query term_id of a Custom Taxonomy by name
  40. How to Clear Empty Search values?
  41. Custom Database Table and foreach
  42. Searching with Multiple (Parallel) Criteria on Custom Fields?
  43. Custom Register Link on Backend Form
  44. Trying to exclude custom posts based on date, while sorting by custom field
  45. How Can I Always Display A Particular Post First Using WP_Query?
  46. How can I modify this code to make the search box include tags and meta
  47. query variables for custom taxonomies
  48. How to make WordPress search page use a relative path
  49. optimal taxonomy or custom post types
  50. WordPress search on a custom table
  51. display text generated via custom get query string
  52. Customising the default wordpress search functionality
  53. What is my error trying to create a new table in the database?
  54. How to get the full product name by ignoring custom modification on it
  55. Migrating my site to a new domain does not keep any changes made in customizer
  56. Moving Quantity after product description
  57. New Page/Post Screen Opens an Existing Post
  58. Allow WP users to sort search result on a videos site
  59. How to extend WP_query to a specific table?
  60. WP_User_Query Search Multiple Keywords from a Multi-Select Field?
  61. Advice on how to structure a custom plugin
  62. Custom query pagination with php parameter as arg problem
  63. How to have differents sites share the same tables of DB?
  64. Displaying posts on a page that have been assigned a value in a database
  65. Add to search posts query array with post IDS which will appear first
  66. Wrap WordPress Login Form in custom Div
  67. Post filter with multiple checkbox taxonomy terms
  68. How to automatically pull an information from a form field onto an other page?
  69. Query Posts to display all posts with category “custom field value”
  70. Search Replace Database ONLY for posts of certain category?
  71. Custom Form Input not saving to Database
  72. How to append the excerpt to the content in the single post page?
  73. Custom dropdown search form that allows users to select option B based from Option 1
  74. Accountless password generation
  75. Query 1 custom post type, each day, alphabetically
  76. Show different pages on site depending on user choice
  77. Custom search results
  78. Custom display for homepage, tag and author pages
  79. Add several fields from different tables to post, fields per post are in same row of table
  80. WordPress custom search – pagination
  81. Where should I put this custom data?
  82. Creating a search with tag variable also added for more detailed results
  83. Show WP content on different PHP Sites
  84. What shortcode should I use for
  85. Pre_Get_Posts order DESC not registering
  86. Database custom table issues – incorrect result displayed
  87. Check if values exists DB
  88. Multiple Taxonomies Using Custom SQL Query
  89. Changing starting number of User ID
  90. Apply `the_content’ filter to theme customisation live preview
  91. Two searchforms with different categories/posts per page
  92. child_of not working while searching
  93. Custom WordPress SQL Query 4 posts per custom taxonomy
  94. Custom search by several options send on form not works
  95. Search results load individual post in slide out div
  96. Accessing + retrieving custom database in WordPress
  97. Custom MySQL query to list post
  98. Custom Query Arguments
  99. Custom Query for Taxonomy
  100. Custom Search Results Page
Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)