[Solved] Why might using extract on user-supplied data be risky in PHP? — Ans: It can overwrite important variables and cause security issues | PHP

PHP - Array Functions

Why might using extract on user-supplied data be risky in PHP?

AIt converts arrays to strings unexpectedly

BIt can overwrite important variables and cause security issues

CIt always causes syntax errors

DIt deletes existing variables silently

Step-by-Step Solution

Solution:

Step 1: Understand extract risks
extract creates variables from array keys, which can overwrite existing variables if not controlled.
Step 2: Consider user input
User-supplied data may contain keys matching sensitive variable names, leading to security risks.
Final Answer:
It can overwrite important variables and cause security issues -> Option B
Quick Check:
extract can overwrite variables, causing security risks [OK]

Quick Trick: Avoid extract on untrusted data without precautions [OK]

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