Friday, July 31, 2009

zend php 5 certification : filtering input

We should not trust any input from any source.The source could be a user, url or database value, any thing. Every input data must be filtered. unfiltered data makes your system vulnerable to attacks. php offers many input filtering functions. Let's a mock zend php 5 certification question regarding this.

Question : What is the best way to ensure the distinction between filtered / trusted and unfiltered / untrusted data?


1. None of the above
2. Never trust any data from the user
3. Enable built-in security features such as magic_quotes_gpc and safe_mode
4. Always filter all incoming data
5. Use PHP 5's tainted mode
See the book OpenCart 1.4 Template Design Cookbook.
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Opencart Extensions:

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  4. Opensweetcaptcha - An easy way to generate attractive captcha for your system!: Find it here.
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My Books:

  1. OpenCart 1.4 Template Design Cookbook.
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