Page 292 - Beginning PHP 5.3

Part III: Using PHP in Practice

Figure 9-8

Figure 9-9

How It Works
For each step of the signup process, the script displays a form with a hidden field, step, to track the
current step. For example:

<input type=”hidden” name=”step” value=”1” />

The script starts by testing for the presence of this field in the submitted form data. If found, and its
value is valid (between 1 and 3), the script uses PHP’s call_user_func() function to call the
appropriate processing function — processStep1(), processStep2(), or processStep3(). If the

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