What are the potential performance issues with using mysqli multi_query for mass updates in PHP?

Using mysqli multi_query for mass updates in PHP can potentially lead to performance issues due to the execution of multiple queries in a single call. This can cause high server load and slow down the overall process, especially when dealing with a large amount of data. To improve performance, it is recommended to use prepared statements and execute each update query individually in a loop. 

// Sample code snippet using prepared statements for mass updates

// Assuming $mysqli is your mysqli connection object

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

// Bind parameters
$stmt->bind_param("si", $value, $id);

// Loop through the data and execute the update query for each record
foreach ($data as $record) {
    $value = $record['value'];
    $id = $record['id'];
    
    $stmt->execute();
}

// Close the statement
$stmt->close();

Keywords

mysqli multi_query mass updates performance issues PHP

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