jqAutocomplete for PHP is a server-side component built on top of open and widely used standards - jQuery, jQuery UI, ThemeRoller.

Autocomplete, when added to an input field, enables users to quickly find and select from a pre-populated list of values as they type, leveraging searching and filtering.

By giving an Autocomplete field focus or entering something into it, the plugin starts searching for entries that match and displays a list of values to choose from. By entering more characters, the user can filter down the list to better matches.

This can be used to enter previous selected values, for example you could use Autocomplete for entering tags, to complete an address, you could enter a city name and get the zip code, or maybe enter email addresses from an address book.

You can pull data in from a local and/or a remote source: Local is good for small data sets (like an address book with 50 entries), remote is necessary for big data sets, like a database with hundreds or millions of entries to select from.

Some of the major features include:

• Blazing speed - only the minimal data required is sent from server to client using JSON.
  
• Supports the most popular SQL Databases like PostgreSQL, MySQL, Microsoft SQL Server.
  
• Supports array data.
  
• jQuery based client-side - familiar and powerful client-side API based on jQuery and jQuery UI.
  
• Feature complete - every feature you might need, including caching,loading data at once and etc
  
• ThemeRoller support - theming is based on ThemeRoller. A set of 25 themes by professional designers is available, including great free theme authoring tool.
  
• many more.