How to securely provide a $_POST var in WP_Query with PHP 7?

Maybe you could try this, to sanitize the whole $_POST array

$_POST  = filter_input_array(INPUT_POST, FILTER_SANITIZE_STRING);

Or to sanitize just a field, you could use the native WP function

$sanitized = sanitize_text_field ( $_POST['key'] );

Related Posts:

  1. Show only one post for each author ( Page loads too slow )
  2. Modern Tribe Calendar wp-query with meta query not working at all
  3. if statement on database query
  4. Looking for most performant way to execute several similar WP queries within shortcodes
  5. Why is variable not working on custom sql query using wpdb?
  6. Create WP_Query to search for posts by their categories or their parent/child categories
  7. WP_Query adds “(wp_posts.ID = ‘0’)” so no results are returned
  8. get_posts() and WP_query limits ‘AND’ conditions to a maximum of 6 for meta value queries in WordPress
  9. inserting a post from an extern php file but post content doesn’t show on wp site
  10. Hide posts if user is added to it WP_query
  11. Custom route and query
  12. WordPress WP_Query without query GET parameters
  13. How to WP_Query posts order by parent title?
  14. Passing in MySQL prepare statement parameter separately throwing error
  15. Usermeta data unserialize, extract and display in table in WordPress
  16. how to get data from two different table from wordpress database
  17. Query doesn’t display text data with apostrophes
  18. SQL Query Search page
  19. How can I display a query in a page?
  20. Custom query_posts() parameter
  21. Execute multiple PHP Snippets causes error?
  22. How do I use WP_query with multiple post IDs?
  23. dbDelta support for FOREIGN KEY
  24. Include WP_Query in my own PHP file?
  25. Inject post (from specific category) between posts in Loop
  26. How to correctly submit a search form and display the result in an independent page
  27. is_page() not working from within a plugin
  28. Does WordPress cache get_user_meta() results?
  29. Passing JSON data from WP Query into AJAX causing NULL errors
  30. Using Echo in ShortCode – Stuck
  31. MySQL query performed 4 times inside loop
  32. How to add 2 posts under another post? Formatting should be intact
  33. No wp-config.php file on local install of wordpress – site still displays
  34. Use ajax to update_post_meta
  35. Count number of published posts by type
  36. How to display custom field on homepage
  37. Can an array be used as a meta_query value?
  38. Can’t increase posts_per_page by variable
  39. Insert all post IDs in new database table
  40. WordPress WP_Query() Not working properly
  41. What SQL / WordPress queries would need a nonce?
  42. Different database query in function.php using mysqli
  43. Get taxonomy terms only of the WP_Query current posts
  44. How to do multiple searches (with logical OR) in WP_Query in hook pre_get_posts?
  45. Get WooCommerce product details and transfer them to a custom DB table
  46. get current custom post ID by WP_Query method
  47. What is a valid parent for get_terms()?
  48. Calculating a large number of MYSQL queries as customshort codes, slow
  49. Dynamic content based on a URL parameter
  50. Sum the total amount of a specific product purchased per user and display in table
  51. Security for data obtained from the database
  52. How to retrieve the data from the sever and displaying it in a page?
  53. How to overwrite orderby with add_query_var
  54. Make a database query using WordPress
  55. get_the_ID() in the footer returns wrong value
  56. WP_Query multiple post results
  57. echo var into wp_query
  58. Using wordpress function to retrieve data
  59. form $_post action value gets truncated after it passes through two forms
  60. Add row to custom database Table and delete all rows older than 1 day
  61. Toolbar Hidden in a Virtual Page
  62. making php value numeric
  63. Removal of all posts content in bulk, keeping the posts itself
  64. Wp Query : Order by distance lat,lon
  65. get different meta-data of a complicated query at the same time
  66. Please help! I have a problem with getting wordpress databas
  67. How to run complex query using PHP
  68. Using a new WP_Query inside the loop
  69. WordPress sorting posts by date and title using a dropdown
  70. How to get specific multiple pages excerpts at homepage?
  71. Conditional formatting on data fetched from MYSQL
  72. Can I split a huge wp_postmeta table across different databases or servers?
  73. WordPress mysql deos not work with php7
  74. Wp-query output correct, but the loop shows one less item (only sometimes)
  75. How to display sticky post always at the top (before regular post) in wordpress?
  76. Error inserting into custom table – Object of class wpdb could not be converted to string [closed]
  77. WP + MySql db / PHP
  78. The plugin generated 225 characters of unexpected output during activation
  79. append data to mysql table via submit button coded in php – not working
  80. WordPress select query issue
  81. How to do a MySql query in WordPress?
  82. Add two or multiple functions in WordPress Post or Page
  83. direct query to post_meta table
  84. Send data from plugin to external database
  85. How to set max users to 17.000
  86. directorypress theme error mysql_error() [closed]
  87. List sibling pages widget, exclude current page
  88. Cannot Upload Custom Header Image into WordPress Dashboard
  89. Does wp_query and query_posts affect website performance? [duplicate]
  90. WordPress post pagination on custom template not working
  91. Ajax Load More or View More functionality for woocommerce category layout by template overriding
  92. Predefine Magazine Style Layouts
  93. Parse error: syntax error, unexpected ‘}’ in C:\xampp\htdocs\admin\products.php on line 148 [closed]
  94. How to set variable to specific field when querying
  95. Variable ++ in query loop
  96. XML WP_Query problem in PHP 8.0 and 8.1
  97. a problem in class in class-wp-hook.php
  98. Error resetting database index using ALTER TABLE in $wpdb->query
  99. Count custom posts type and filter by tag
  100. AJAX WP_Query’s order and orderby parameters not working