1C-Bitrix Code Audit: Find Bottlenecks Before They Become Problems
A project on Bitrix starts lagging under load, a kernel update throws fatal errors, or a new team can’t make sense of custom code — these are typical symptoms that an independent code review uncovers. We perform code audits using modern PHP 8.1+, D7 API, and platform-specific best practices. Over 7 years we’ve completed more than 30 reviews for large marketplaces and e-commerce sites with thousands of products. As a result, clients save up to 2–3 months of development and avoid data breach fines. Request an audit to get an objective code assessment and a refactoring plan.
Why a Bitrix Code Review Is Necessary
A code review is not just bug hunting — it’s a systematic analysis of architecture, security, and performance. On the 1C-Bitrix platform, issues accumulate over years: using outdated APIs, lack of caching, direct data access without ORM. Regular audits keep technical debt under control and simplify kernel upgrades. Certified developers with seven years of experience ensure confidentiality and objectivity.
What Problems We Find
N+1 queries — the classic catalog component issue. Instead of one SQL query, additional N queries are fired for prices, images, and properties. This kills the database with 50+ products per page. SQL injections — direct user input concatenated into queries without escaping. Example: $_GET['id'] concatenated in CIBlockElement::GetList. One client avoided a major fine thanks to our review. XSS — outputting user data without htmlspecialchars(). Particularly dangerous in contact forms and personal accounts. Outdated APIs — code using the old kernel (e.g., CUser::GetByID) instead of the D7 API. D7 is 3x faster on typical queries.
| Issue Type | Occurrence in Projects | Critical Cases |
|---|---|---|
| N+1 queries | 80% | 30% |
| SQL injections | 45% | 15% |
| XSS | 60% | 20% |
| Outdated APIs | 90% | 5% |
Our Review Process
- Static analysis — PHPStan level 5–6 and PHP_CodeSniffer (PSR-12). Catches ~40% of issues automatically.
- Manual review — checking key subsystems: catalog, orders, 1C integration, authorization modules. We look for injections, caching errors, and skewed architecture.
-
Query profiling — enable
BX_DEBUGon dev. Benchmark: up to 30 SQL per page. More than 100 indicates a systemic problem. - Report — a table with severity classification, code examples, and recommendations.
Sample report excerpt
| Category | Issues Found | Critical |
|---|---|---|
| Security | 18 | 3 |
| Performance | 24 | 5 |
| Architecture | 31 | 0 |
| Outdated APIs | 67 | 0 |
Recommended Audit Frequency
We recommend a code review once a year, when switching contractors, after implementing major features, or before scaling. Regular audits keep technical debt under control and allow timely kernel updates.
What the Service Includes
- Static analysis (PHPStan + PHPCS) with a violation report
- Manual check of key subsystems: catalog, orders, integrations, authorization
- SQL query profiling on your dev server
- Security audit: SQL injections, XSS, secret storage
- Final report with severity classification and recommendations
- Consultation on the refactoring plan
Case Study: A Marketplace on Bitrix
The project had been developed by different teams over 5 years. The current contractor claimed it was impossible to add new functionality “due to crooked architecture.” We conducted a review and identified systemic problems.
What we found: 847 direct $DB->Query() calls with concatenation — 12 potential SQL injections? N+1 in listings: 1 query for the list + N for prices (with N=50, 51 queries instead of 2). Business logic in template.php of components. 40% of custom code in /bitrix/. The client’s savings from eliminating critical vulnerabilities exceeded a significant amount, and a 3x reduction in server load cut infrastructure costs.
“After the review we were able to update the kernel without panic, and load dropped by a factor of three,” — client CTO.
Result: a prioritized refactoring plan for 6 months. Critical vulnerabilities fixed in 2 weeks. From our practice, this case saved the client about 2 months of development and reduced server load by 3x. 95% of clients extend their contract after the first review.
How to Order a Code Audit?
If you’ve noticed slowdown symptoms or want to check your project’s security — request a code audit. We’ll prepare a detailed report and recommendations. Contact us to discuss scope and timeline. Get a free consultation.