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Chapter 5. User-Driven Querying > User Input
5.1. User Input
Three techniques can be used to pass data that drives the querying process in a web database application:
Manual entry of a URL to retrieve a PHP script resource and provide parameters to the resource. For example, a user may open a URL using the Open Page option in the File menu of the Netscape web browser.
Data entry through HTML <form> environments. For example, <form> environments can capture textual input, and input is made by selecting radio buttons, selecting one or more items from a drop-down select list, clicking on buttons, and through other data entry widgets.
Embedded hypertext links that can be clicked to retrieve a PHP script resource and provide parameters to the script.
