Marko Heijnen

CodeKitchen

MySQL_* functions is deprecated and this plugin creates a layer to use MySQLi instead. So you don’t get notices when using PHP 5.5
Be sure to read the installation instructions, as this is not a traditional plugin, and on activation you do need to install our database driver by using the settings screen or move manually db.php into your content directory.

MySQLi database layer

I was restoring an old WordPress site (v3.7.1) that I haven't touched in over 3 years that on my WAMP server. Even though this plugin hasn't been updated for just as long, it was helpful in fixing the depreciation notices that I was getting for mysqli, thank you.



Helpful when running dated WordPress sites

MySQL_* functions are deprecated and this plugin creates a layer to use MySQLi instead. So you don't get notices when using PHP 5.5

meloniq

Enables searching post meta fields on admin pages.

WP-Admin Search Post Meta

Enables searching post meta fields on admin pages.

MySQLi database layer vs WP-Admin Search Post Meta