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I have a small, well-loved PHP 7.4 script that now needs to run flawlessly on the most recent stable PHP release. The code lives here for your review: [login to view URL] The remit is straightforward: refactor or replace any deprecated language constructs, libraries, and extensions so the application installs and executes without warnings or errors on PHP 8.x (or whatever version is current at project start). All existing functionality must remain identical, and the original header comment that credits the first author must stay untouched. Once the conversion is complete, I want the whole thing run through thorough manual testing—page by page, feature by feature—to confirm parity with the 7.4 build. Automated tests are welcome if they help you, but I will be signing off based on a manual walk-through. Deliverables • Updated codebase committed back to the repository (or delivered as a ZIP) • Brief manual-testing checklist showing what you verified and the outcome • A short change log summarising key incompatibilities you addressed No new features or UI tweaks are needed; this is purely a version uplift.
Project ID: 40462471
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179 freelancers are bidding on average $135 USD for this job

Hello, I’m interested in upgrading your PHP 7.4 script to ensure full compatibility with the latest stable PHP 8.x release while preserving all existing functionality exactly as it is. I understand this is a strict version-migration task, so I will focus only on refactoring deprecated syntax, updating incompatible functions or extensions, and ensuring clean execution without warnings or errors—without introducing any feature changes or UI modifications. After the upgrade, I will carry out a structured manual test of the application flow to verify feature parity with the original version, along with any lightweight automated checks if needed to support stability. Deliverables will include the updated codebase (via repository commit or ZIP), a clear changelog outlining all compatibility fixes, and a concise manual testing checklist showing verification results across key functionality. The original author header will remain fully intact as requested. Budget and timeline can be discussed further based on code complexity and dependency usage within the script. Warm regards, Harpreet Singh
$70 USD in 5 days
9.5
9.5

Hey, I will refactor your Enthusiast script for full PHP 8.x compatibility — updating deprecated constructs like `mysql_*` to PDO, replacing removed functions, and resolving any `match`/named argument conflicts. I will deliver a clean change log and manual testing checklist. One thing I will check early — PHP 8.x made `string-to-number` comparisons stricter, which often breaks older form-handling logic silently. Catching those early prevents subtle bugs. Questions: 1) Are you running MySQL or MariaDB, and which version? 2) Should I commit directly to your GitLab repo or deliver a ZIP? Ready to start whenever you are. Kamran
$90 USD in 5 days
8.5
8.5

With extensive experience in PHP development, I understand the need to update your script to run seamlessly on the latest PHP release. I have successfully refactored legacy codebases in the past to ensure compatibility with newer versions. My question: Would you prefer the manual testing checklist in a specific format for easy review? Regards, Yogesh Kumar
$150 USD in 7 days
8.5
8.5

Hi, With over 15 years of experience as a Full-Stack, AI, Network, and Systems Engineer, I specialize in projects that require intricate troubleshooting and complex problem-solving. Your project of upgrading the PHP script aligns perfectly with my skillset and expertise. Although your requirement is a simple version uplift, it's essential to have a seasoned developer who can handle it with precision, ensuring no functionality or usability is compromised. Working from planning and architecture to development and optimization, my extensive background includes skills with all the technologies, framework, and languages that your project demands - PHP (of course), MySQL, JavaScript, React, Node.js, MERN stack, LAMP stack, Python, CakePHP - you name it. Restating your requirements hosting-specifically and with clear milestones like "refactoring" or "replacing libraries" instead of "run without errors," enables me to assess your expectations properly. Moreover, given the significance of manual testing for this project you will be delighted to know about my keen attention to detail during testing. Going page by page and feature by feature while ensuring parity with the concept of every functionality holds great importance when I deliver a project. Additionally, after its completion I offer an extended 1-month support for any debugging or issues arising to make sure all runs perfectly even after launch. My commitment toward providing re Thanks!
$75 USD in 3 days
8.3
8.3

Hello, Warm greetings! I’ve reviewed your requirements and will work closely with them to deliver the most suitable, high-performance solution for your project. I am a PHP Developer & Web Architect with 7+ years of experience specializing in building custom web applications, portals, dashboards, CRMs, e-commerce platforms, and APIs using core PHP. My focus is always on clean architecture, performance, security, and long-term scalability. ✅ PHP Skills & Expertise > Core PHP Application Development > Custom Web Application Development > MVC Architecture Implementation > E-commerce & Payment Gateway Integration > Database Design & Optimization (MySQL) > HTML5, CSS3, Bootstrap > JavaScript / jQuery / AJAX > Website Speed Optimization & Security Hardening ? Types of Projects I Build with PHP > Business Websites & Portals > Custom CRM / ERP Systems > E-commerce Platforms (B2B & B2C) > Booking & Reservation Systems > SaaS Platforms > Admin Dashboards & Reporting Systems > API-based Applications & Third-party Integrations I look forward to the opportunity to work with you. Thank you!
$250 USD in 4 days
8.2
8.2

Let me take up the challenge of converting Enthusiast to PHP 8.x As you've requested, all existing functionality will remain identical, and the original header comment that credits the first author will stay untouched. I will test the converted code to ensure that it is on par with the current one based on PHP 7.x. Let me know if you'd like me to help.
$169 USD in 6 days
7.8
7.8

Hello, I can upgrade your PHP 7.4 script to the latest PHP 8.x version without changing its current functionality. I will: • Fix deprecated and incompatible PHP code • Keep the original author comments untouched • Test all pages and features manually • Make sure the script runs without warnings or errors I have experience upgrading old PHP projects to modern PHP versions while keeping everything stable and working the same. Ready to start immediately. Thank you.
$120 USD in 7 days
7.9
7.9

Hello I have extensive experience with PHP programming, including upgrading PHP version and I have completed a lot of similar projects. I have got you want whole thing run through thorough manual testing, and you want "without warnings or errors" - and I am going to do so. Also, I checked URL and checked some PHP files - seems as quite easy job.
$77.50 USD in 4 days
7.4
7.4

Hello, We’d be happy to help modernize your PHP 7.4 application for full compatibility with the latest stable PHP 8.x release while preserving all existing functionality and project integrity. We can help with: ✔ PHP 7.4 → PHP 8.x compatibility upgrades ✔ Deprecated function/library replacement ✔ Legacy extension & syntax refactoring ✔ Error/warning cleanup for strict PHP 8 environments ✔ Composer/dependency compatibility review ✔ Manual feature-by-feature testing ✔ Clean Git-based workflow & version control ✔ Backward-compatibility preservation ✔ Detailed changelog & verification checklist Our approach would focus on: • Maintaining identical functionality and behavior • Preserving original code structure where possible • Avoiding unnecessary rewrites or UI changes • Ensuring clean execution without warnings/errors • Thorough manual validation before delivery Why Doomshell? • Strong PHP modernization expertise • Experience upgrading legacy applications safely • Comfortable working with unfamiliar codebases • Careful testing and documentation workflow • Clean, maintainable refactoring approach Deliverables: ✔ Updated PHP 8.x compatible codebase ✔ Manual testing checklist ✔ Compatibility changelog ✔ Git commits or ZIP delivery A couple of quick questions: 1. Is there a preferred target PHP version (8.1, 8.2, 8.3, etc.)? 2. Will we have access to a staging environment for live compatibility testing, or should testing be performed locally/containerized? Regards,
$240 USD in 5 days
7.6
7.6

Hi, I can upgrade your PHP 7.4 script to fully support the latest stable PHP 8.x version by fixing deprecated functions, compatibility issues, and outdated extensions while preserving all existing functionality and original author credits. I’ll also perform detailed manual testing, provide a verification checklist, and deliver a concise changelog of all compatibility updates made. Best regards Ihtsham
$54.89 USD in 1 day
7.1
7.1

With over a decade of experience as a full-stack developer, specializing in PHP and MySQL, I am proficiently poised to help you upgrade your well-loved PHP script. Throughout the years, I have been coding with various versions of PHP from legacy installations to the most current ones. This adaptability honed my problem-solving skills and enhanced my understanding of different versions' incompatibilities bugs - skills well suited to the task at hand. While some developers may focus solely on refactoring, I prioritize ensuring that all existing functionality will remain identical after the upgrade. This critical aspect allows your application to run smoothly on the latest PHP version without any warnings or errors while still retaining its original essence. Moreover, solidified by my extensive experience in AI & Machine Learning and APIs & Integrations, I am well-versed in writing thorough automated tests and conducting meticulous manual testing walkthroughs—a crucial process you intend for this project.
$30 USD in 7 days
7.2
7.2

Hello I understand the urgency of getting your PHP 7.4 script updated to remain compatible with modern server environments. These legacy migrations often require a careful touch to ensure existing functionality remains intact while fixing deprecation warnings. With over 5 years of experience in full-stack development, I have successfully migrated numerous legacy PHP applications to 8.x without downtime or data loss. Are you available for a quick chat to discuss the current codebase and your timeline for the upgrade? Giáp Văn Hưng
$140 USD in 7 days
6.9
6.9

Hello, I can upgrade your PHP 7.4 script to run cleanly on the latest stable PHP 8.x version while keeping the existing behavior, structure, and the original author credit header untouched. I will review the GitLab codebase, fix deprecated PHP syntax, library or extension issues, check MySQL-related compatibility, and do a careful manual walkthrough page by page so the updated version matches the current 7.4 build. I will also provide a brief checklist of what was tested and a short changelog explaining the key compatibility fixes made. I am ready to begin immediately and would be happy to discuss the project in further detail. Thanks, Teo
$200 USD in 2 days
6.8
6.8

Hi, I can help upgrade your PHP 7.4 script to the latest stable PHP 8.x release while keeping the existing behavior, structure, and original author credit header intact. Since this is a version uplift rather than a redesign, I would focus strictly on compatibility, stability, and clean refactoring. I have experience modernizing legacy PHP applications, resolving deprecated functions, updating syntax, fixing library or extension issues, debugging MySQL compatibility problems, and validating behavior across older and newer PHP versions. I can review the repository, identify PHP 8.x breaking changes, update only what is necessary, and make sure the application installs and runs without warnings or errors. After the code update, I will manually test each page and feature against the expected PHP 7.4 behavior, then provide a clear checklist showing what was verified, along with a concise change log explaining the key compatibility fixes made. I would be grateful for the opportunity to handle this carefully and will gladly accept any feedback you may have. Best, Justin
$140 USD in 7 days
6.6
6.6

Hi, Could you share any specific areas of the script you’re particularly concerned about during the upgrade? Ensuring compatibility with PHP 8.x is essential. I’ll refactor deprecated constructs and run thorough tests to maintain existing functionality. With over 5 years of experience in PHP, I specialize in upgrading legacy code to modern versions. I’ll commit the updated code back to your repository and include a brief manual testing checklist, along with a change log outlining any incompatibilities addressed. Rest assured, the original author’s credit will remain untouched, and my priority is a seamless transition for your application. Let’s get started on making your script run flawlessly in PHP 8.x! Best Regards, Shivam
$100 USD in 1 day
6.8
6.8

Hi I can upgrade your existing PHP 7.4 script so it runs cleanly on the latest stable PHP 8.x environment while keeping the current functionality unchanged. I have experience with PHP version migrations, deprecated syntax cleanup, dependency updates, extension compatibility fixes, warning/error resolution, and manual regression testing. The main technical problem is that PHP 8.x introduces stricter typing, changed warnings, removed/deprecated functions, and possible library compatibility issues that can break older scripts. I can solve this by reviewing the GitLab codebase, refactoring incompatible constructs, checking runtime behavior page by page, and preserving the original author credit header exactly as required. I will avoid feature changes or UI modifications and focus only on compatibility, stability, and functional parity with the PHP 7.4 version. I can also provide a clear manual testing checklist and a short changelog explaining the key incompatibilities fixed. The final code can be committed back to the repository or delivered as a clean ZIP package. Thanks, Hercules
$140 USD in 7 days
6.9
6.9

Hi! I'll review the Enthusiast codebase, refactor all PHP 7.4 deprecated constructs, functions, and extensions to be fully compatible with the current PHP 8.x release, run a page-by-page manual testing pass, and deliver the updated code plus a changelog and testing checklist as requested. Any specific PHP version you want to target, such as 8.2 or 8.3?
$100 USD in 5 days
6.5
6.5

Hello, and thank you for the clear brief. I can help modernize your PHP 7.4 application for full compatibility with the latest stable PHP 8.x release while preserving all existing functionality and keeping the original author attribution/comments untouched. The work would include: • Refactoring deprecated PHP 7.x constructs and incompatible syntax • Replacing outdated functions/extensions where required • Updating dependency compatibility issues • Resolving warnings, notices, and fatal errors under PHP 8.x • Verifying backward behavior remains identical After the upgrade, I would perform a full manual walkthrough of the application page-by-page and feature-by-feature to confirm parity with the original 7.4 version. I can also add lightweight validation scripts/tests where useful during development. Deliverables would include: • Clean updated codebase committed to the repository or packaged as ZIP • Manual testing checklist with verified outcomes • Concise changelog documenting major compatibility fixes and deprecated items addressed I’m comfortable working with legacy PHP modernization projects and maintaining stable behavior during version migrations without introducing unnecessary rewrites or UI changes.
$40 USD in 1 day
6.6
6.6

As a seasoned Web Engineer with more than a decade in the field, I am confident in my ability to tackle your PHP 7.4 script upgrade to the latest PHP version. My extensive experience in front-end and back-end web development, as well as bug fixing and technical issue resolution, aligns perfectly with your project requirements. I understand the importance of keeping existing functionalities intact in an application while making crucial upgrades. Building on that, I will refactor or replace any deprecated language constructs, libraries and extensions, ensuring that not only does your script successfully run on the most recent stable PHP release but it also functions without errors or warnings. Furthermore, my meticulous approach to testing will help me generate a brief manual-testing checklist outlining each feature you requested verification for along with its outcome, so you can be confident about the parity between your 7.4 build and this upgraded version. As deliverables, you can expect a fully updated codebase committed back to the repository (or delivered as a zip), an insightful change log summarizing key incompatibilities addressed during the refactoring process.
$30 USD in 1 day
6.1
6.1

Upgrading your PHP 7.4 script to the latest stable version is a great move for performance and security. I can help identify any deprecated features or compatibility issues that might arise during the transition. A careful review of your existing codebase will ensure that we address potential pitfalls, especially with any JavaScript interactions or MySQL queries that might need adjustments. I'd start by setting up a local environment to test the script with the latest PHP version, then gradually implement updates while running tests to catch any issues early. Q1: Are there specific features or functionalities in the script that you're particularly concerned about during the upgrade? Q2: Do you have existing test cases that we can use to validate the script's functionality post-upgrade? Q3: What timeline are you envisioning for completing this upgrade? Let’s get your script running smoothly on the latest version.
$150 USD in 2 days
6.5
6.5

Dumas, United States
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