Getting Started
Nature and Scope of the Problem
Understanding Filtering, Validation,
and Output Escaping
Preventing the Most
Common Forms of Attack
Protecting Against Common
Website Vulnerabilities
Protecting Against
SQL Injection Attacks
About the Author
What is filtering, validation, output escaping,
and why do it?
What are the most common PHP
filtering functions and techniques?
What are the most common PHP
validation functions and techniques?
What are the most common PHP
output escaping functions?
Using filter_var() to filter and validate
LAB: Filtering and validating posted form data
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