Osclass Documentation - Guides, Tutorials & Dev Resources
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Osclass

Getting Started (5)

Config & Troubleshoot (16)

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Developer Guide (36)

Helper Functions (22)

Release Notes (13)

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Optimization Setup to Improve Performance

Optimizing scripts and stylesheets is crucial for SEO, user experience, and website speed. Optimize assets Osclass offers a built-in optimization feature that: Merges CSS and JavaScript files into a single file. Minifies merged files by removing unnecessary spaces and comments. Allows exclusions of ... 383 words
Config & Troubleshoot

How to Change Favicons (step-by-step guide)

How to Change Favicons in an Osclass Theme Understanding Favicons in Osclass A favicon is a small icon associated with a website, typically displayed in browser tabs, bookmarks, and shortcut icons. In Osclass, favicons are usually located in two primary locations: Root Installation Folder: favicon.i... 622 words
Config & Troubleshoot

How to Increase Email Domain Authority and Avoid Spam Filters

Email delivery is not guaranteed. Even if your email server works correctly, your messages can still end up in spam or be rejected entirely by the recipient’s mail server. The most common reason is low email domain or server authority. This article explains what email authority is, why it matters, a... 974 words
Config & Troubleshoot

The zip file is not valid

Article address issue with error that can occur when installing/adding plugin or theme into backoffice or directly via API from OsclassPoint market. The zip file is not valid The message indicates that the archive cannot be extracted, even though the plugin package itself is correct. The problem is ... 478 words
Config & Troubleshoot

Emoji in Texts

Osclass 8.3 supports Emoji in textual fields, however for existing installation there may be action required on site owners. As it's not possible to automatically convert some tables charset to utf8mb4 due to foreign keys, it's manual process left to site owners. Procedure to convert tables 1. List ... 302 words
Developer Guide

Use Optimized Functions

Osclass 8.3 brings a lot of new functions including optimized data loader functions those avoid excessive and repetitive database queries and store them into session for possible repetitive use, sort or filter. Optimized Functions How it works? Let's analyze it: Problem: get list of available countr... 382 words
Developer Guide

Alpha & Beta Testing

When new Osclass version is close to release, Alpha or Beta testing may be available (follow forums for call on testing). Anyone can join testing and post feedback on forums. To join Alpha or Beta test, you just need to add new row to your config.php. Alpha testing: define('ALPHA_TEST', true); Beta ... 176 words
Developer Guide

Alert frequency buttons integration into theme

Osclass 8.3 brings possibility to select alerts (subscriptions) frequency. Available values are: Instant (using minutely cron) Hourly Daily Weekly To support this feature, place following code into your alert section: <?php echo osc_alert_change_frequency(osc_alert()); ?> Note that in some the... 331 words
Developer Guide

User Items Filter and Public Profile Filter Implementation

In this guide we will implement new Osclass 8.3 features - filters of listings in User Items page and Public Profile page. These filters allow users to quickly refine items in case there is many of them. User Items Filter Go to your theme folder, open user-items.php and place there (ideally above it... 764 words
Developer Guide

Osclass 8.3.1 – Security, PHP 8.5 Support, Cookies Rework and Utf8mb4 Upgrade

Osclass 8.3.1 is a major maintenance and security-focused release that introduces full compatibility with PHP 8.5, a significant rework of session and cookie handling, database-wide UTF8MB4 support for emojis, and numerous fixes and enhancements across the backoffice, search system, caching, routing... 990 words
Release Notes

Osclass 8.3 - Major Performance and Feature Upgrades

Osclass 8.3 is a landmark release that introduces full support for PHP 8.3 and 8.4, major performance enhancements, advanced search optimizations, a revamped user experience, database structure improvements, and new customization features. This update brings deeper control over URL structure, SEO, u... 958 words
Release Notes

Osclass 8.2.0 - Major Enhancements in Image Upload, RSS, and More

We are thrilled to introduce Osclass 8.2.0, a major release focused on improving the core functionalities of the Osclass classifieds platform. This version brings a completely new image upload library (Uppy.io), image reordering, enhancements in RSS feeds, and many other crucial updates. New Image U... 620 words
Release Notes

Osclass 8.1.2 Release - Bug Fixes and UX Improvements

We are excited to announce Osclass 8.1.2, a version focused on improving features introduced in 8.1.0 while fixing bugs and enhancing overall usability. These updates refine the backoffice experience, language code management, and multiple core functionalities. Enhanced Backoffice Translations &... 434 words
Release Notes

Osclass 8.1.0 - A Major Evolution in Classifieds Software

Osclass 8.1.0 is a groundbreaking update that brings full support for PHP 8.1 and 8.2, introduces a built-in translation manager, improves cache options, enhances subdomain functionality, and adds comment reply features. This update also removes outdated features like multisite support and optimizes... 664 words
Release Notes

Osclass 8.0.2 - Performance, SEO, and Usability Enhancements

Osclass 8.0.2 continues the evolution of the classifieds script with major backend improvements, SEO-friendly user profiles, a redesigned media management section, and additional refinements for PHP 8.1 compatibility. New Upsert Function – Optimized Database Operations A new upsert function has been... 449 words
Release Notes

Osclass 8.0.1 - A Step Closer to PHP 8.1 & Improved Performance

Osclass continues to evolve with the 8.0.1 release, focusing on PHP 8.1 compatibility groundwork, mobile-first installation, enhanced ban rules, and additional security and performance optimizations. PHP 8.1 Compatibility Work Begins The transition to PHP 8.1 has begun, but full compatibility is sti... 548 words
Release Notes

Osclass 8.0 - Continuous Development and Future-Proof Enhancements

Osclass continues to evolve with the release of version 8.0, bringing a fresh approach to versioning, security, child themes, and improved usability. This release marks a significant milestone, ensuring long-term development and continuous innovation. New Versioning System – A Leap to 8.x.x Osclass ... 696 words
Release Notes

Osclass 4.4 - May Release with Critical Enhancements

The Osclass 4.4 update brings one of the most important releases in recent years, introducing critical improvements, UX enhancements, and long-awaited features. From jQuery 3.6 support to bulk plugin actions, this update is designed to make managing your classifieds platform easier and more efficien... 485 words
Release Notes

Osclass 4.3 - PHP 8 Compatibility & Customization Features

Osclass continues to be one of the best open-source classifieds scripts, and its continuous development ensures long-term stability and security. In this release, we introduce full compatibility with PHP 8, a new Customization section in the admin panel, and additional usability improvements. PHP 8 ... 399 words
Release Notes

Osclass 4.2 - Optimization, Market, Moderation & New Features

Osclass 4.2 is a major update packed with new features, improvements, and fixes, making it the most advanced version to date. This release focuses on website optimization, market integration, moderation enhancements, structured data, listing renewals, and improved security. CSS & JavaScript Opti... 737 words
Release Notes

Osclass 4.1 - Auto-Upgrade, Locations, UI & Performance Enhancements

Osclass v4.1 is a significant upgrade that introduces numerous features and improvements, focusing on automation, performance, user experience, and security. This update enhances location management, introduces auto-upgrade functionality, refines the user interface, and optimizes the classifieds exp... 556 words
Release Notes

Osclass 4.0 - A New Era for Classifieds

Osclass has entered a new phase with the release of Osclass v4.0. After years of stagnation, OsclassPoint has taken the lead in evolving the platform, introducing essential improvements, a modernized UI, and enhanced functionality. This release is a significant milestone, ensuring Osclass remains a ... 326 words
Release Notes
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