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• • • After the connection to database is successfully created and the PDO object instance is set, the object can be used to perform SQL queries. The SQL queries with PDO can be made in two ways: - directly using ' exec()', and ' query()' methods, - or with the prepare(). Execute() statement.

The first variant is more simple, in this lesson it's presented the exec method. • The queries that modify rows in the table, but not return a result set with rows and columns (INSERT, UPDATE, and DELETE), are send with exec(), this method returns the number of affected rows, or FALSE on error. Toshiba Resource Conflict Pci Serial Bus Controller In Slot 01. The sites table is created - The instruction: ' exec('SET CHARACTER SET utf8')' sets the transfer of data between PHP and MySQL to be made with UTF-8 encoding. It is advisable to add this instruction especialy when working with data containing diacritics or special characters, but the PHP script should also contain this header: header('Content-type: text/html; charset=utf-8').

INSERT Once the MySQL table is created, you can add rows with data. To add data into a table, use an INSERT command, in the exec() method. Number of rows added: 3 The 'sites' table will contain these data: id name category link ------------------------------------------------------------------------------------ 1 Courses - Tutorials education 2 PHP-MySQL Course programming 3 English Courses foreign languages marplo.net/engleza • To get the last auto-inserted 'id' (in a AUTO_INCREMENT PRIMARY KEY column), use the lastInsertId() method. $conn->lastInsertId(); - When you add multiple rows in the same INSERT query, this method will return the ID of the first added row. UPDATE, and DELETE are SQL instructions that changes data in a table, but not return a result set with rows and columns.

They can be executed in the same way as INSERT, with the exec() method. UPDATE The data in the rows of a MySQL table can be modified with the SQL command INSERT.