mysqliprepare

mysqliprepare is a function in PHP's MySQLi extension used for preparing SQL statements. It helps prevent SQL injection vulnerabilities by separating the SQL query structure from the data that will be inserted or queried. When you use mysqli_prepare, the SQL statement is sent to the database server for parsing and compilation without any actual data. This allows the database to optimize the query execution plan.

After preparing a statement, you can bind variables to the placeholders within the SQL query using functions like mysqli_stmt_bind_param. This process ensures that the data is treated as literal values and not as executable SQL code. Once the variables are bound, you execute the prepared statement using mysqli_stmt_execute. The database then combines the pre-compiled query with the bound data to perform the operation.

The benefits of using mysqli_prepare include enhanced security against SQL injection attacks, improved performance for queries that are executed multiple times, and cleaner code by separating query logic from data. It is the recommended approach for interacting with MySQL databases in PHP when dealing with user-supplied input. The prepared statement is then closed using mysqli_stmt_close.