Yes, but there are restrictions. ① You can log in to the same account on both iPhone and Android phones, but logging in to the latest device will cause the earliest session to be offline; ② You can log in at the same time on the mobile phone and the computer desktop, but the functions are not synchronized; ③ Although using third-party tools or dual-app functions can enable logging in between two mobile phones, it is unofficially supported and may violate regulations; ④ Alternative solutions include using web version/desktop version to match the main phone, or transferring chat records through cloud backup and file tools. Some Android machines can also use "dual applications" to run two account instances.

?As a stable digital asset pegged to the US dollar, USDT's value conversion and monetization are issues that many users are concerned about. This article will introduce the value composition of USDT in detail and provide practical tutorials on value conversion and monetization in mainland China. 1 USDT's cash value is approximately equal to the real-time dollar exchange rate, but the final delivery price through C2C trading will fluctuate slightly. The core of conversion is to select a merchant with good reputation and appropriate price to trade through the C2C function of a reliable platform.

Real-nameauthenticationonAlipayismandatoryforfullaccountfunctionalityandsecurity.1.Itensureslegalcompliance,preventsfraud,andunlocksfeatureslikemoneytransfersandpaymentreception.2.Usersneedtoprovideaccuratepersonaldetailsincludingfullname,IDnumber,an

Methods to manage database state in Laravel tests include using RefreshDatabase, selective seeding of data, careful use of transactions, and manual cleaning if necessary. 1. Use RefreshDatabasetrait to automatically migrate the database structure to ensure that each test is based on a clean database; 2. Use specific seeds to fill the necessary data and generate dynamic data in combination with the model factory; 3. Use DatabaseTransactionstrait to roll back the test changes, but pay attention to its limitations; 4. Manually truncate the table or reseed the database when it cannot be automatically cleaned. These methods are flexibly selected according to the type of test and environment to ensure the reliability and efficiency of the test.

In LaravelEloquent, the global scope is automatically applied to each query, suitable for scenarios such as filtering inactive users; the local scope needs to be called manually, suitable for scenarios such as displaying published articles only in a specific context. 1. Global scope is implemented by implementing the Scope interface and registering it in the model, such as adding where('active',true) condition. 2. Local scope is a method in the model, starting with scope and can take parameters, such as scopeVerified() or scopeOfType(). 3. When using global scope, its impact on all queries should be considered. If necessary, you can exclude it by without GlobalScopes(). 4. Choose to do it

The steps for creating and using custom middleware in Laravel are as follows: 1. Use the Artisan command to generate middleware classes, such as phpartisanmake:middlewareCheckAge; 2. Write logic in the generated middleware class, such as checking whether the age parameter is less than 18, and redirect to the specified page if the conditions are met, otherwise continue to execute subsequent logic; 3. Register the middleware and add mappings to the $routeMiddleware array in the Kernel.php file; 4. Apply the middleware to the route or controller, and call the middleware method through ->middleware('check.age') or in the constructor; 5

LaravelSanctum is suitable for simple, lightweight API certifications such as SPA or mobile applications, while Passport is suitable for scenarios where full OAuth2 functionality is required. 1. Sanctum provides token-based authentication, suitable for first-party clients; 2. Passport supports complex processes such as authorization codes and client credentials, suitable for third-party developers to access; 3. Sanctum installation and configuration are simpler and maintenance costs are low; 4. Passport functions are comprehensive but configuration is complex, suitable for platforms that require fine permission control. When selecting, you should determine whether the OAuth2 feature is required based on the project requirements.

USDT cash exchange needs to be operated through a trading platform that supports fiat currency withdrawal. 1. Prepare a trading platform account that supports fiat currency withdrawal (such as Binance, Ouyi, Huobi, etc.); 2. Complete KYC real-name authentication; 3. Bind bank cards or Alipay and other payment methods; 4. Log in to the account and ensure that USDT is in the fund account or spot account; 5. Enter the OTC or fiat currency area and choose to sell USDT; 6. Set the sales amount and match the buyer; 7. After confirming the other party’s payment, click “Confirm Coin Delivery” to complete the transaction. Withdrawal methods include OTC fiat currency transactions, bank card withdrawals and third-party payments, among which OTC is more efficient. Notes include making sure to verify that the money is received before releasing, avoiding frequent large withdrawals, and contacting customer service in time when encountering abnormalities. The key to the entire process is to choose