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    Deprecation of Array and String Offset Access Syntax in Magento 2

    Last Updated | December 7, 2023

    As of PHP 7.4, a significant shift has occurred in the syntax for array and string offset access, rendering the use of curly braces deprecated. This change affects Magento 2 developers, prompting the need for adaptation to ensure seamless compatibility with the latest PHP versions. In this blog post, we’ll delve into the details of this deprecation and guide you on the necessary adjustments in Magento 2.

    Understanding the Deprecation

    PHP 7.4 Curly Brace Syntax Deprecation

    PHP 7.4 marks the deprecation of the curly brace syntax for array and string offset access. This change aims to streamline code consistency and readability, with the square bracket syntax being the recommended alternative.

    Adapting to the Deprecation in Magento 2

    Impact on Magento 2

    Developers working with Magento 2 need to be mindful of this syntax deprecation, especially when working with installations that utilize PHP 7.4 and above. Failure to adapt may result in deprecated warnings and potential issues.

    Best Practices for Updating Code

    Review your Magento 2 codebase for instances of the deprecated curly brace syntax. Embrace the recommended square bracket syntax to maintain compatibility and adhere to evolving PHP standards. Consider using static code analyzers or IDE inspections to identify and streamline the update process.

    Examples of Deprecated Syntax

    Array Offset Access


    $exampleArray = [1, 2, 3];
    $value = $exampleArray{1};


    $value = $exampleArray[1];

    String Offset Access


    $exampleString = “Magento”;
    $character = $exampleString{2};


    $character = $exampleString[2];


    Frequently Asked Questions

    1. Why was the curly brace syntax deprecated in PHP 7.4?

    The deprecation aims to enhance code consistency and readability. The square bracket syntax is now the recommended standard for array and string offset access.

    2. How can I identify and update deprecated syntax in my Magento 2 code?

    Utilize static code analyzers, IDE inspections, or manual reviews to identify instances of deprecated syntax. Replace curly brace syntax with the recommended square bracket syntax.

    3. Will using deprecated syntax impact the performance of my Magento 2 store?

    While immediate performance impact may be minimal, staying up-to-date ensures optimal performance and prepares your codebase for future PHP versions.

    4. Are there tools or extensions to automate the process of updating deprecated syntax in Magento 2?

    As of now, there aren’t specific tools, but regular codebase updates and adherence to modern development practices ease the transition during syntax changes.

    In conclusion, understanding and addressing the deprecation of curly brace syntax in Magento 2 is essential for maintaining codebase compatibility and ensuring a smooth transition with PHP 7.4 and beyond. Update your practices to embrace the recommended square bracket syntax and stay ahead in the evolving landscape of PHP development.


    Meet Naveed Abbas, a seasoned web developer with 10+ years of experience. Specializing in PHP, Magento 2, WordPress, Laravel, and APIs, Naveed is your go-to expert for crafting digital solutions that stand out. With a passion for staying ahead in the ever-changing tech world, he ensures your projects are not just up to date but tailored to your unique needs. Join Naveed on a coding journey where innovation and expertise meet simplicity and excellence.