25.1. Dynamic Buttons
Images wrapped in anchor tags are a common navigational device. Instead of plaintext, this method allows you to create buttons similar to those created in the operating system or even to create fanciful icons. In most cases it is best to leave these as graphics created in your favorite graphics editor, because the time between changes is relatively long. However, if you have a button that changes often, it may make sense to create it dynamically with PHP. The content of the button, the label, needs to be available as a string in PHP. It could be a statement setting the value of a variable. It could also be a value retrieved from a file or a database.
An illustration will make this idea clear. Many corporate Web sites have ...
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