Old PHP code often used mssql_init, mssql_bind and mssql_execute. Those APIs are obsolete, but their basic goal—calling a SQL Server stored procedure with typed parameters—remains common.
Concepts and context
Use currently supported Microsoft PHP drivers such as SQLSRV or PDO_SQLSRV. Prepare a call, bind untrusted values as parameters, execute it, and fetch the result with appropriate error handling.
Practical application
With PDO_SQLSRV, a representative call is $stmt = $pdo->prepare(‘EXEC dbo.GetCustomerById @CustomerID = ?’); $stmt->execute([123]);. Confirm that the procedure exists and its expected output matches the application. Test nullable outputs and multiple result sets separately.
Compatibility and cautions
Never migrate legacy mssql_* calls by mere renaming. Driver APIs and supported parameter directions differ. Use restricted service credentials, verified encryption, and secure exception handling.
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