Importance of esc_url, esc_attr & esc_html in WP

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esc_url, esc_attr and esc_html known as Validating, Sanitizing, and Escaping.
Long story short, the main reason these things are important because escaping (fundamentally, sanitizing input and escaping output) is a critical aspect of web application security.

Important Articles On This Topic:

1. The Importance of Escaping All The Things
2. Usage of esc_url, esc_attr, and esc_html functions

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Nahid Mahamud

Web Developer | Graphic Designer | WordPress & Woo-commerce Expert