Compatibility analysis of the latest version of PHP and popular PHP frameworks

PHP 8.1 compatibility with popular PHP frameworks is as follows: Laravel: Laravel 9.x and above are fully compatible with PHP 8.1, while Laravel 8.x has some changes that need attention. Symfony: Symfony 6.x and above are partially compatible with PHP 8.1, some features (such as annotation feature dependency injection) are not yet fully supported in PHP 8.1. Zend Framework: Zend Framework 3.x and higher are fully compatible with PHP 8.1, with no incompatible breaking changes identified.

Compatibility analysis of the latest version of PHP and popular PHP frameworks

Introduction

With the release of PHP 8, it is critical to ensure that popular PHP frameworks remain compatible with the latest version of PHP. This article will analyze PHP 8’s compatibility with popular frameworks such as Laravel, Symfony, and Zend Framework, and provide practical examples to validate our findings.

Compatibility Table

##8.1Fully compatiblePartially compatibleFully compatible8.0Partially compatiblePartially compatibleFully compatible7.4Fully compatibleFully compatibleFully compatible

PHP Version	Laravel	Symfony	Zend Framework

##Practical case

Laravel

Laravel 9.x and above has been confirmed to be fully compatible with PHP 8.1.

• There are a few changes in Laravel 8.x that need to be noted, such as the deprecated mysql function in PHP 8.1.

• // Laravel 8.x 中的过时代码
  use Illuminate\Support\Facades\DB;
  $users = DB::table('users')->get();
  
  // Laravel 9.x 中的兼容代码
  use Illuminate\Support\Facades\DB;
  $users = DB::table('users')->select('*')->get();

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Symfony

Symfony 6.x and later has been confirmed to be partially compatible with PHP 8.1.

• Some features, such as annotation feature dependency injection, are not yet fully supported in PHP 8.1 and later.

• // Symfony 5.x 中的注解特性依赖注入
  /**
   * @ORM\Entity
   */
  class User
  {
      /**
       * @ORM\Column(type="integer")
       * @ORM\Id
       * @ORM\GeneratedValue(strategy="AUTO")
       */
      private $id;
  }
  
  // Symfony 6.x 中暂时不支持的特性依赖注入
  // pending support in Symfony 7
  /**
   * @ORM\Entity
   */
  class User
  {
      /**
       * @ORM\Column(type="integer")
       * @ORM\Id
       * @ORM\GeneratedValue(strategy="AUTO")
       */
      private $id;
  }

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Zend Framework

Zend Framework 3.x and higher has been confirmed to be fully compatible with PHP 8.1.

• No major changes found that are incompatible with PHP 8.1.

Conclusion

While PHP 8.1 is basically compatible with most popular PHP frameworks, there are still some version- and feature-specific compatibility issues that need to be noted. By referring to the compatibility matrix and practical examples, developers can ensure that their applications will run properly after upgrading to the latest version of PHP.

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