What are the recommended best practices for updating multiple records in a MySQL database using PHP?

When updating multiple records in a MySQL database using PHP, it is recommended to use prepared statements to prevent SQL injection attacks and to improve performance by reducing the number of queries sent to the database. Additionally, using a loop to iterate over the records and execute the update query for each record is a common approach. 

// Assume $records is an array of records to be updated, each record containing an id and new data
// Establish a database connection
$mysqli = new mysqli("localhost", "username", "password", "database");

// Prepare the update query
$stmt = $mysqli->prepare("UPDATE table_name SET column1 = ?, column2 = ? WHERE id = ?");

// Bind parameters
$stmt->bind_param("ssi", $column1, $column2, $id);

// Iterate over the records and execute the update query for each record
foreach ($records as $record) {
    $id = $record['id'];
    $column1 = $record['new_value1'];
    $column2 = $record['new_value2'];
    
    $stmt->execute();
}

// Close the statement and database connection
$stmt->close();
$mysqli->close();

Keywords

MySQL PHP database update records

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