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My in-house CRM includes a POS billing module written in PHP that is miscalculating order totals right at checkout. Sub-totals, taxes, discounts and the final amount sometimes don’t add up, so customers see the wrong figure before they pay. Everything else in the system runs smoothly—only the arithmetic inside the checkout flow needs attention. I need a developer who can dive into the existing PHP codebase, trace the calculation logic, and correct whatever is causing the error. Once the fix is in place, I also want a quick sanity check on edge cases (multiple discounts, mixed tax rates, rounding) so the totals remain reliable under any normal scenario. Deliverables: • Updated PHP files (or clearly documented patch) that resolve the miscalculation • Brief summary of the root cause and steps taken • Confirmation, via a handful of test tickets, that totals match expected results across typical checkout scenarios If you are comfortable debugging PHP billing routines and can turn this around quickly, let’s get started.
Mã dự án: 40241070
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Hoạt động 17 ngày trước
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I am new at freelancer.com but having experience of more than 10 years I can solve your error at least give me chance
₹100 INR trong 7 ngày
0,0
0,0
5 freelancer chào giá trung bình ₹142 INR/giờ cho công việc này

Hello, I understand that your in-house CRM's POS billing module is miscalculating order totals, and I’m here to help you resolve this issue efficiently. My focus will be on diagnosing the root cause of the miscalculations and implementing a robust solution to ensure accurate billing for your customers. With extensive experience in troubleshooting and optimizing billing systems, I can guarantee a thorough examination of your current setup. My approach involves not only fixing the immediate discrepancies but also enhancing the overall reliability of your billing processes to prevent future issues. Let’s work together to get your system back on track and ensure that your clients receive precise billing every time. Regards, Nurul Hasan
₹200 INR trong 7 ngày
8,7
8,7

Thank you for sharing the details of your PHP POS billing issue. I appreciate your thorough description of the problem you're facing with the miscalculations at checkout. It's clear that accuracy is crucial for your customers' trust and your business operations. With over 7 years of experience in software development, including extensive work with PHP, I am confident in my ability to tackle this project head-on. Here's how I plan to approach resolving the billing totals issue: - Conduct a thorough code review to identify the specific logic causing the miscalculations - Implement targeted fixes to ensure accurate sub-totals, taxes, and discounts are calculated correctly - Perform rigorous testing on edge cases to guarantee the reliability of the updated calculations In previous projects, I have successfully debugged and optimized PHP billing systems for e-commerce platforms, resulting in significant improvements in accuracy and customer satisfaction. One notable example is a similar POS billing module for a retail client where I revamped the calculation logic, leading to a 20% reduction in checkout errors. I am eager to learn more about your specific requirements and discuss how we can work together to address this issue effectively. Could you provide more details on the current technology stack and any integrations that might impact the billing calculations? Feel free to
₹110 INR trong 7 ngày
1,2
1,2

As an experienced Full Stack Developer, I have the deep understanding of PHP and MySQL you need to dive into your existing codebase and trace the calculation logic causing the incorrect billing totals. I've honed my skills over time, implementing robust web solutions and crafting precise backend logic. Rest assured, my clear understanding of edge cases such as multiple discounts, mixed tax rates and rounding errors will ensure reliability in your system's checkout process. I offer more than just identifying issues; my approach combines fixing the problem while adding value through a well-documented patch or updated PHP files. I'll also provide a brief summary of the root cause and the steps I took to rectify it. Furthermore, I always conduct thorough testing to validate that everything functions as intended before concluding a project. This includes a confirmation via test tickets to ensure that your POS system provides accurate results across all possible checkout scenarios. Ir!
₹100 INR trong 40 ngày
0,9
0,9

I am an excellent fit for your project, having successfully completed similar work in the past. I understand you need precise fixes to the PHP POS billing module to ensure clean, professional, and user-friendly checkout flows with seamless and integrated calculations for subtotals, taxes, discounts, and final totals. Even though I am new here, I have worked on numerous projects outside of freelancer and developed the skills necessary to complete this work effectively. I specialize in PHP debugging and billing routine audits, ensuring automated and accurate financial flows. I’d be glad to discuss your project—at best, we find a strong fit to work together; at minimum, you receive a complimentary consultation. Regards, Keagan.
₹200 INR trong 14 ngày
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rewa, India
Thành viên từ thg 2 18, 2026
$750-1500 AUD
$250-750 USD
$30-250 USD
€12-18 EUR/ giờ
$8-15 AUD/ giờ
$30-250 AUD
₹12500-37500 INR
₹37500-75000 INR
€30-250 EUR
₹1500-12500 INR
₹37500-75000 INR
$250-750 USD
₹1500 INR
$30-250 USD
€750-1500 EUR
$2-8 USD/ giờ
$30-250 USD
$10-30 USD
₹12500-37500 INR
£20-250 GBP