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Learn how to create and handle custom events in Magento 2.4.7 using events.xml and Observer classes. This complete developer guide includes best practices, updated code examples, file paths, area scopes.....

To check if a file exists at a specific location in Magento 2, you can use the Magento\Framework\Filesystem\Driver\File class. This method is more reliable than PHP’s native file_exists() function, as i.....

Need to turn a two-column CSV file into a usable array in Magento 2? This guide shows you how to convert CSV data into key-value pairs using Magento’s built-in Csv class. You'll learn how to structure y.....

When working with Magento 2, PHP_CodeSniffer often flags lines that exceed a specific character limit—typically 120 characters—as a warning. These warnings can clutter your reports, especially when lon.....

Learn how to properly unit test a Collection Factory in Magento 2. This guide walks you through mocking dependencies, testing data retrieval logic, and verifying expected results without hitting the database.....

Learn how to safely remove or drop a database table in Magento 2.4.7 using the latest DataPatchInterface method. This step-by-step guide includes code examples, best practices, and helpful developer tips.....

To attach a "Download Sample File" to the Import functionality in Magento 2, you'll need to create a custom import entity and configure it properly within your module. This process involves several key.....

Learn how to create and use JavaScript mixins in Magento 2.4.7 to safely customize the checkout estimation.js component. This guide covers setup, coding, best practices, and real-world examples to extend.....

Magento 2 discourages the direct use of the $_FILES superglobal due to security concerns and coding standards. If you're encountering the "Use of $_FILES is discouraged in Magento 2" warning, it's likely.....

To test InputException error messages in Magento 2, you can write unit tests using PHPUnit's assertEquals() and assertStringMatchesFormat() methods. These tests ensure that your exception messages are.....