Hostinger PHP Security Best Practices 2025
A comprehensive guide to securing PHP/MySQL on Hostinger shared hosting.
Key Topics
•PHP Security Configurations
•MySQL/Database Security
•File Permissions
•XSS and SQL Injection Prevention
•SSL/TLS Configuration
•Backup Strategies
•Password Hashing
•Monitoring and Logging
1. PHP Security Settings
Configure in .user.ini:
display_errors = Off
log_errors = On
session.cookie_httponly = 1
session.cookie_secure = 1
2. Database Security
Always use PDO with prepared statements to prevent SQL injection.
3. File Permissions
•Directories: 755
•Files: 644
•Config files: 600
•NEVER use 777!
4. Security Headers
Set these headers in PHP:
•Content-Security-Policy
•X-Frame-Options
•X-Content-Type-Options
•Strict-Transport-Security
5. Password Hashing
Use password_hash() with PASSWORD_ARGON2ID or PASSWORD_BCRYPT.
Security Checklist
•Enable 2FA in hPanel
•Force HTTPS
•Store credentials outside public_html
•Enable error logging
•Create regular backups
Security is an ongoing process, not a one-time setup.
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