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To see this class in action, begin by downloading and installing it to your system.You can install the package manually, extracting its contents to your PEAR base directory, or by using the PEAR installer.Microsoft® Office Front Page® 2003 allows you to create some custom validation within the form feature.

You can see that the $query variable is passed to the anchor and to the text which contains the escaped with htmlspecialchars() input.For example, he can target particular browsers and send links with malicious GET parameters which would load external Java Script files.Above is an example of how we can easily change both HTML and CSS on the page (a relatively harmless example).(16 printed pages) Introduction Getting Started Writing the Validation Script Connecting the Form to the Script Associating Form Fields with Custom Script Code Listing Conclusion When you create forms, providing form validation is useful to ensure that your customers enter valid and complete data.For example, you may want to ensure that someone inserts a valid e-mail address into a text box, or perhaps you want to ensure that someone fills in certain fields.So, if you need to test if a particular chunk of data conforms to, say, the format for an e-mail address, all you need to do is pass it to Validate'semail() method, which will check it for you and return a true/false value.

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