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I need upgrade the website to 8.1 php. Currently website have some theme and plugin issues for the current php, so it's required someone with experience.
Project ID: 40468069
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Hi, I've handled several PHP 8.1 migrations for WordPress sites and I know exactly the kind of deprecated function errors and compatibility issues you're dealing with — things like outdated `create_function()` calls, nullable parameter warnings, and theme/plugin code that breaks under stricter type handling. My approach is straightforward: I'll set up a staging environment, audit your theme and plugins for PHP 8.1 incompatibilities, update or patch the problematic code, and thoroughly test everything before pushing changes to production. I'm available to start right away and will keep you updated throughout the process. Let's get your site running smoothly on PHP 8.1.
€8 EUR in 1 day
6.8
6.8
200 freelancers are bidding on average €23 EUR for this job

Hello, I can help you safely upgrade your WordPress site to PHP 8.1 and fix the compatibility issues causing theme and plugin errors. I will first audit your current setup to identify deprecated functions, outdated plugins, and theme-level incompatibilities that are breaking under the new PHP version. Then I will update and adjust the codebase where needed—this may include fixing deprecated PHP calls, updating theme functions, and ensuring all active plugins are compatible with PHP 8.1. Before making the switch, I will test the site in a staging environment to ensure there are no downtime risks, and that core features (forms, pages, admin panel, and plugins) work smoothly. Once stable, I will migrate the changes to your live site and verify performance and error logs. Timeline: 2–4 days depending on plugin/theme complexity Cost / Bid: $110 USD fixed Warm regards, Harpreet Singh
€19 EUR in 5 days
9.5
9.5

Hi, PHP upgrades on WordPress usually fail not because of PHP itself, but because one or two outdated plugins or theme functions are still relying on deprecated code. I can safely upgrade your site to PHP 8.1, first by auditing the theme and plugins on a staging copy, fixing any compatibility issues, and then switching the live environment once everything is stable. I’ve handled multiple WordPress PHP upgrades where older themes and plugins needed adjustment to avoid fatal errors and white screens, so the focus will be on keeping the site fully functional without breaking design or features.
€30 EUR in 1 day
9.2
9.2

Hello, With over a decade of experience in web development and design, my team and I at Our Software have encountered various challenges that arise from system upgrades, and we understand how impactful these changes can be. We have an in-depth understanding of PHP, HTML and their compatibility with WordPress-essential for your project. In the face of modernizing websites, one must be aware of deprecated functions, an essential aspect that we pay close attention to. We assure you that not only will we upgrade your site to version 8.1 PHP, but we'll also conduct a thorough analysis of your current theme and plugins, troubleshooting any possible compatibility issues that could hamper your website's functionality. One thing I've learned over the years is that communication is vital. Therefore, serving our clients effectively entails not just hearing out their concerns but establishing a symbiotic relationship as well. We are committed to providing not only quality service but also excellent customer interactions. Don't let the deprecated functions slow you down; let's turn your site into the optimized powerhouse it should be. Partner with us, and together we'll achieve the "WOW" factor you seek for your website. Thanks!
€25 EUR in 1 day
8.6
8.6

Hi, I am an experienced WordPress developer, and I can help upgrade your website to PHP 8.1 while fixing theme and plugin compatibility issues caused by deprecated functions. I will identify and resolve PHP warnings and errors, update or modify incompatible code, ensure your website functions smoothly on the latest PHP version, and test the site thoroughly to maintain stability, performance, and compatibility across all features. Please send a message so we can go through the details, decide on the timeline and deliverables. Best regards.
€30 EUR in 7 days
8.5
8.5

With over a decade of experience in HTML, PHP, and Web Development, I am the ideal candidate to update your WordPress website from its current deprecated PHP to 8.1 PHP version. Considering your struggle with theme and plugin issues, my skills in creating custom themes and modifying plugins using popular tools like Advanced Custom Fields (ACF), WPForms, Yoast SEO, Rank Math, WooCommerce will come in handy to solve these issues. I am also familiar with several popular WordPress themes such as Elementor, Divi, Astra, GeneratePress that you've used. My knack for eCommerce platforms also extends to migrations like yours - whether it's from platforms like Wix, Shopify, Joomla, Magento or plain static HTML sites. What makes me extra appealing for your gig is my experience in AI-driven content recommendation which could significantly enhance your site's user experience and engagement after the upgrade—chatGPT API, JetPack AI or an AI-based recommendation engine steal the show.
€19 EUR in 1 day
8.2
8.2

Hello, I checked your requirements of PHP 8.1 upgrade and it is doable. I can start immediately and I will upgrade PHP version, fix plugin errors and resolve theme conflict issues. I'm a skilled WordPress developer and I will fix all theme and plugin compatibility issues for PHP 8.1. I can also debug deprecated functions and optimize database queries for faster site performance. ✔ I recently handled a similar project with WordPress, PHP, MySQL and HTML. 1. ModernFit Health Site Upgrade • Client had deprecated code and plugin crashes on PHP 7.4 to 8.1 switch. • I replaced outdated functions, fixed theme hooks, and updated each plugin for PHP 8.1 compatibility. • Tech Stack Used: WordPress, PHP 8.1, MySQL, jQuery, CSS. Note: Please let me know when we can connect to discuss your site's deprecated functions and database optimization plan. Warm regards, Yogesh Arora
€19 EUR in 7 days
8.5
8.5

Hello, I can upgrade your WordPress website to PHP 8.1 and resolve the theme and plugin compatibility issues caused by deprecated functions and outdated code. I will handle: • Full compatibility review of themes, plugins, and custom code • Fixing deprecated PHP functions and warnings for PHP 8.1 support • Updating or safely replacing incompatible plugins if required • Testing frontend, admin panel, forms, and website functionality after upgrade • Resolving fatal errors, warnings, and performance issues • Creating backups and ensuring safe migration during the upgrade process • Providing a summary of fixes and compatibility improvements made I have experience upgrading legacy WordPress websites to newer PHP versions while maintaining stability and existing functionality. Ready to start after reviewing the website environment and current issues. Thanks
€30 EUR in 2 days
8.1
8.1

Hello. WordPress development expert ready to help you with a project. I have more than 400 good reviews and more than 15 years of development experience behind, so project will be done with the best quality and timeframe. Free bug fixing support. We can always make deal on price. Tnx, and hope to hear you soon.
€30 EUR in 1 day
8.3
8.3

As a WordPress specialist, I have over 7 years of experience dealing with the kind of theme and plugin issues you're currently facing due to outdated PHP. Let me assure you that I don't simply provide quick fixes; I strive for lasting results, whether it is in terms of fixing slow, hacked or broken WordPress websites, or making upgrades like the one you need on your website. My expertise is in ensuring maximum performance, optimizing page speed and security. The websites that I handle typically end up with a load time under 2 seconds and A+ GTMetrix performance, something that I can ensure for your website as well post-upgrade. My proficiency in HTML, PHP and web development would help me address the deprecated functions efficiently, resolving all existing conflicts and potential errors. In summary, my approach combines performance optimization, security enhancement, error fixing and seamless updates into a comprehensive service package that guarantees client satisfaction. Efficiency aside, my transparent workflow with before/ after reports ensures that clients are always in the loop about progress. When you entrust me with updating your site to 8.1 php, you won't just get an improved website but a technological foundation that supports your business long-term. Anticipating your positive response!
€19 EUR in 1 day
7.6
7.6

Woah Hello, I see you're looking to upgrade your website to PHP 8.1 and are facing some issues with your theme and plugins due to the current version. With 7+ years of experience in WordPress development, I can help sort out these compatibility problems and ensure your site runs smoothly on the latest PHP version. My approach would begin with a thorough review of your site to identify which themes and plugins are causing issues. From there, I would either update or replace them as needed to ensure everything is compatible with PHP 8.1. I also prioritize website security and optimization to enhance your site's performance. I’m confident I can get your website back on track and fully functional with the upgrades you need. Best regards, Ivan Mandinski
€19 EUR in 2 days
7.5
7.5

★★★★★★ START NOW ★★★★★★ Message me so we talk in detail.. Hello, I can Upgrade WordPress php and Deprecated Functions perfectly !! I placed bid after checking your requirements. If you want you can ask me any questions regarding your requirement. I'm interested in working on your project. And don't worry about work. First, check my work if you are happy Then pay me. Please let me know if you require any detailed information. Waiting for your reply. I hope you respond to me. Thanks Sunil
€19 EUR in 1 day
7.5
7.5

I can safely upgrade your website to PHP 8.1, fix any theme/plugin compatibility issues, and ensure everything runs smoothly without breaking functionality. I’ll also check performance, stability, and update conflicts so your site remains fully stable after the upgrade. Best regards, Ihtsham
€30 EUR in 1 day
7.2
7.2

Hi, I can help upgrade your website to PHP 8.1 and resolve the theme and plugin compatibility issues currently affecting the site. I have experience upgrading WordPress websites to newer PHP versions while maintaining stability and performance. I’ll first review the existing theme, plugins, and server environment, then identify deprecated functions, compatibility conflicts, and any custom code issues causing errors on PHP 8.1. The process will include: * Full backup before changes * Plugin and theme compatibility review * Fixing PHP 8.1 warnings/errors * Testing across key pages and functionalities * Ensuring the website runs smoothly on production I can also recommend safer plugin alternatives if any components are outdated or unsupported. Looking forward to helping you complete the upgrade successfully.
€19 EUR in 1 day
7.2
7.2

I am an expert in Shopify, WordPress, and Web Development Technologies, ready to upgrade your website to PHP 8.1. With my experience, I can resolve the existing theme and plugin issues efficiently, ensuring a smooth transition. I'm willing to start RIGHT AWAY to enhance your site’s performance. Regards, Pooja
€30 EUR in 1 day
7.1
7.1

As someone who's been in the WordPress game for over a decade, I've seen it all and conquered every challenge that came my way. From theme and plugin integration to PHP upgrades, I've got the experience and know-how to tackle any hurdle your website is facing. As part of my daily operations, I stay current with the latest WordPress trends, ensuring that deprecated functions are a foreign language to me. In addition to upgrading your site to 8.1 PHP, I'll also fix any issues that stem from this update on your theme or plugins. My aim is not just to complete the task, but also to elevate your website to new heights of performance, security and functionality. Given my skills in website design, development and management, I'm uniquely positioned to ensure everything about your site—from layout to core functionalities—runs smoothly. What truly differentiates me from competitors isn't just my technical know-how; it's also my strong commitment to exceeding client expectations. My clients' satisfaction is paramount and I won't stop working until your site is perfect from every angle—even if that means providing you with detailed before-and-after reports for every optimization or customization I implement. Don't take my word for it; let's have a conversation today about any queries you may have or feel free to request a complimentary audit. Let's turn your vision into reality!
€19 EUR in 1 day
6.8
6.8

Hello Hi, I understand you need to upgrade your website to PHP 8.1 for improved performance and security. I have extensive experience performing seamless PHP version upgrades for numerous clients, ensuring zero downtime and enhanced efficiency. Let's schedule a quick chat to discuss getting your site updated smoothly. Giáp Văn Hưng
€30 EUR in 7 days
6.9
6.9

Hi, Have you identified which themes and plugins are causing issues with the current PHP? Upgrading to PHP 8.1 can sometimes lead to compatibility problems that can be resolved with careful adjustments. With over 5 years of experience in PHP and WordPress development, I’ve helped many clients seamlessly upgrade their websites, ensuring that all plugins and themes function smoothly. My background as a Zend Certified PHP Developer has equipped me with the skills needed to tackle these challenges efficiently. I can review your site and resolve the compatibility issues promptly. I’m available for a quick chat if you’d like to discuss the specifics further. Best Regards, Shivam K.
€8 EUR in 1 day
6.7
6.7

With over five years of experience in web and mobile app development, I have honed my skills in HTML, PHP, Web Development, and Web Design, among others. This makes me uniquely equipped to handle your project which involves upgrading your WordPress site to 8.1 PHP and addressing the theme and plugin issues. My approach is driven by problem-solving techniques that help me identify and resolve issues efficiently. I am not just well-versed in developing solutions; I also excel at ensuring their scalability and security. I have ample experience in upgrading outdated frameworks, managing deprecated functions, as well as troubleshooting theme and plugin conflicts. Furthermore, my proficiency with Bootstrap 5, Tailwind, Sass and knowledge of SEO optimization will ensure that the upgraded site not only runs efficiently but also ranks well on search engines. Clients value my ability to offer end-to-end digital solutions and this project presents an exciting challenge where I can showcase refined skills in CMS (WordPress), PHP (error-handling/debugging), Website Management and Optimization too. Given my knack for rapid learning and tech adaptation which are imperative in keeping up with the ever-evolving digital landscape, I am confident that I can complete the task effectively and efficiently. Let's collaborate today; let's bring your idea to life!
€20 EUR in 7 days
7.1
7.1

We can safely upgrade your website to PHP 8.1 while ensuring full compatibility with your theme and plugins by first testing everything in a staging environment to avoid any downtime or data loss. After the upgrade, we’ll fix any deprecated functions or plugin conflicts so your site runs smoothly, faster, and more securely on the latest PHP version. Let’s connect so I can quickly review your setup and handle this upgrade professionally with zero disruption to your live site.
€35 EUR in 1 day
6.8
6.8

With web development experience spanning over 18+ years, I am confident that my skills and expertise make me the ideal candidate to upgrade your WordPress php and deprecate functions. My understanding of the task at hand, combined with a deep knowledge of the LAMP technology stack—specifically PHP—further enhances my suitability for this project. Throughout my career, I have gained extensive proficiency in various frameworks such as Laravel, ZendFramework, and CakePHP but most specifically WordPress. I am no stranger to tackling plugin and theme issues, having built (and debugged) websites using platforms like Joomla, Opencart, Magento just to mention a few. Retooling your website with the latest php version is well within my wheelhouse. I pride myself on being a team player, capable of working individually or within a group setting when necessary. This ability allows me to adapt swiftly and cater to specific client requirements in order to produce high-quality work that meets deadlines. As an added bonus, I have a talented team of proficient iOS and Android developers who could further contribute to your project if required. Let's optimize your website for peak performance together!
€30 EUR in 1 day
6.8
6.8

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