Core PHP Security: How to Sanitize and Validate $_POST Data (Essential Guide)
Core PHP Security: How to Sanitize and Validate $_POST Data (Essential Guide) Web development ka asli maza tab aata hai jab teri website sirf chalti nahi, secure bhi chalti hai. PHP me sabse zyada risky scene hota hai jab tu $_POST data accept karta hai. Yahin hacker log apni entry maarte hain. Is blog me simple aur street-smart tareeke se samjho ki sanitize aur validate kaise karein, taaki teri site full safe rahe. 1. Form Data Ka Problem – Hackers Kahan Se Aate? User form me kuch bhi bhar sakta hai: Naam ki jagah script Email me random text Password me HTML tags Message me SQL query Agar tu data bina check kiye database me daal de, to website ko lag jaati hai full vaat . 2. Sanitization Kya Hoti Hai? Sanitization ka matlab hota hai data ko saaf-suthra banana — harmful characters hata dena. Simple words: User ne jo kuch bhi ulta-seedha likha, usko safe bana do. Useful Sanitization Functions: trim() strip_tags() htmlspecialchars() filter_var() mysqli...