WordPress mysqli and PDO

WordPress uses mysql_* functions.

http://core.trac.wordpress.org/browser/tags/3.5.1/wp-includes/wp-db.php

It has used those ever since I can remember, which probably answers your last question. It is what I would consider legacy code. I suspect it will be updated sometime soon (those functions were only deprecated as of PHP 5.5, I believe). I don’t know which route development will go.

Link to a ticket in Trac, courtesy of Wyck (from a comment below):

http://core.trac.wordpress.org/ticket/21663

Related Posts:

  1. Access denied for user ‘root@localhost’ (using password:NO)
  2. MySQL error 2006: mysql server has gone away
  3. “INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
  4. Cannot delete or update a parent row: a foreign key constraint fails
  5. PHP Connection failed: SQLSTATE[HY000] [2002] Connection refused
  6. #1273 – Unknown collation: ‘utf8mb4_unicode_520_ci’
  7. Your password does not satisfy the current policy requirements
  8. PHP Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP
  9. what does “/index.php?admin/admin_dashboard” in my url mean
  10. How to join two tables by multiple columns in SQL?
  11. How to get size of mysql database?
  12. SQL – Update multiple records in one query
  13. MySQL Error 1093 – Can’t specify target table for update in FROM clause
  14. mysqladmin: connect to server at ‘localhost’ failed
  15. mysql update multiple columns with same now()
  16. Usage of MySQL’s “IF EXISTS”
  17. How can I loop through all rows of a table? (MySQL)
  18. Generating a random & unique 8 character string using MySQL
  19. MySQL > Table doesn’t exist. But it does (or it should)
  20. Getting java.sql.SQLException: Operation not allowed after ResultSet closed
  21. mysql count duplicates
  22. phpmyadmin #1045 Cannot log in to the MySQL server. after installing mysql command line client
  23. How to create a foreign key in phpmyadmin
  24. Can’t create test file lower test start server mysql
  25. MySQL delete multiple rows in one query conditions unique to each row
  26. SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name or service not known
  27. CAST to DECIMAL in MySQL
  28. Error Code 1292 – Truncated incorrect DOUBLE value – Mysql
  29. MySql – HAVING vs WHERE 
  30. How to stop mysqld
  31. Is merge statement available in MySQL
  32. Failed to Connect to MySQL at localhost:3306 with user root
  33. How do you properly prepare a %LIKE% SQL statement?
  34. Complex meta query with 3 keys
  35. Set page template for all pages?
  36. Optimize Multiple Taxonomy Term MySQL Query?
  37. WordPress MySQL & PHP Performance
  38. What specific database privileges does WordPress need?
  39. Using source control with WordPress
  40. My WordPress site always displays a cached version of its homepage
  41. wpdb Custom Meta Data with 2 conditions
  42. Updating User Meta with SQL Query
  43. wpdb prepare syntax
  44. How to run this SQL query of wp_terms database
  45. Configure WordPress to connect to Mysql DB using SSH tunneling
  46. Proper way to work with wpdb to get user’s firstname
  47. How to change post format from Aside to Image for all posts?
  48. Inserting Hundreds of Thousands of Posts at Once
  49. wp_admin edit.php slow with lots of queries
  50. How to add and SQL query of posts only published
  51. Slow Mysql Queries
  52. can database and media folder be moved to a different drive?
  53. Find duplicate posts with same slug and author
  54. Rewrite database urls
  55. writing inner join in wpdb
  56. How to get data from WordPress site sql file
  57. Unknown collation when I import a dump from an existing site into a development database?
  58. PHP script can’t connect to Database on port 3307
  59. WordPress with php5-fpm and nginx
  60. Migrating from Existing MySQL Setup to WordPress
  61. How to split the a table in database?
  62. When WordPress Default table, Echo Success. When Plugin Table, Echo Blank
  63. How to translate this mySQL query to $wpdb query
  64. $wpdb to insert html form information
  65. Proper usage of $wpdb->update()?
  66. MySQL 5.5 upgrade ‘broke’ WordPress [closed]
  67. Separate DB by yearly archive of WordPress
  68. What should a WordPress developer know about MySQL? [closed]
  69. Copyright: Get first and last date of post type
  70. Update MySQL query so that it functions again
  71. Query posts by custom taxonomy and sort by post_modified
  72. WordPress $wpdb get posts from category and sort by custom meta
  73. WordPress tables and aliases?
  74. Array Formation Issue
  75. How can I write a formal sql query to get data from a custom table
  76. Migration problems with mysql: Operation not allowed when innodb_forced_recovery > 0 [closed]
  77. WordPress $wpdb no result
  78. Word Press and database from another server sync
  79. when using $wpdb sudden connection rejection without changing anything. Access denied, with errors from repair tool
  80. How to run SQL query from WordPress ‘WP Crontrol’ plugin
  81. edit_user_created_user hook – using to update Groups
  82. Changes not being reflected on new server
  83. Mysql Error in querying form entries in Gravity Form plugin
  84. Improving performance of SQL sub-queries in WordPress
  85. MySQL – How to combine data from two tables into one?
  86. Saving custom term value to the database in new table
  87. Stop my loop to register data twice
  88. MySQL errors after a WordPress clone
  89. XML RPC post produces immediate revision with odd post_date_gmt
  90. MYSQL Join on meta key value?
  91. Woocommerce: Grab total revenue of a product over all orders
  92. Complicated MySQL Query
  93. problem with quotes on new post
  94. SQL Database Lost
  95. Is there an equivalent of MySQL’s SHOW CREATE TABLE in Postgres?
  96. Why does the MySQL command line tool ignore the –port parameter?
  97. How can I show user’s privileges in MySQL?
  98. Postgres equivalent to MySQL’s \G?
  99. Changing host permissions for MySQL users
  100. Possible SQL injection. How to locate and fix?

Leave a Comment