PHP - Superglobals and Web Context
Why is it important to validate input data even after sanitizing it in PHP?
Why is it important to validate input data even after sanitizing it in PHP?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand difference between sanitization and validation
Sanitization removes harmful parts but does not check if data fits expected rules or format.Step 2: Importance of validation after sanitization
Validation ensures data is correct type, length, or pattern after cleaning, preventing logic errors or security issues.Final Answer:
Sanitization cleans data but does not guarantee it meets required format -> Option CQuick Check:
Sanitize cleans, validate checks format [OK]
Quick Trick: Sanitize first, then validate format [OK]
Common Mistakes:
- Thinking validation sanitizes data
- Believing sanitization alone is enough
- Assuming validation is only for databases
Master "Superglobals and Web Context" in PHP
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore PHP Quizzes