September 09, 2026
The client operated a PHP-based web application that handled customer interactions and invoice management. However, the system lacked automation, security, and protection against spam and database vulnerabilities.
Our goal was to streamline invoice delivery, enable secure downloads, and implement strong security practices without affecting performance.
The client needed a solution to the following:
Automatically and Manually send invoices via email
Enable downloadable PDF invoices
Implement contact form validation
Integrate Google reCAPTCHA to prevent spam
Secure the application against SQL injection attacks
No existing system for automated invoice generation
Manual or inefficient invoice sharing process
High volume of spam form submissions
Legacy PHP code vulnerable to SQL injections
Need to balance security with performance
We developed a secure and scalable PHP-based solution using modern best practices and lightweight tools.
| Steps | Process Details | Deliverable |
|---|---|---|
| Invoice Automation & PDF Download | We implemented dynamic invoice generation using mPDF:
| Result Fully automated invoice system with improved user experience |
| Contact Form Validation & Spam Protection | We secured the contact form with:
| Result Significant reduction in spam and improved quality of user submissions |
| SQL Injection Protection Using PDO | To eliminate database vulnerabilities, we:
| Result Strong protection against SQL injection attacks |
PHP
mPDF
PDO
Google reCAPTCHA
Eliminated SQL injection risks
Protected forms from automated spam attacks
Automated invoice generation and delivery
Reduced manual effort and errors
Quick invoice download
Seamless email delivery
Faster and secure form submissions
Before vs After
| Aspect | Before Solution | After Solution |
|---|---|---|
| Invoice Handling | Manual / Limited | Fully Automated |
| PDF Download | Not Available | Instant Download |
| Form Security | High Spam | reCAPTCHA Protected |
| Database Security | Vulnerable | PDO Secured |
| User Experience | Basic | Smooth & Secure |
Automate Invoices
Secure Validation
Use PDO
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At SynergyTop, we are more than just an IT company; we are your strategic partner for digital success. With a passionate team of experts, we craft innovative solutions that drive your business forward.
contact@synergytop.com
+1 619-349-4911
