How can the error "Commands out of sync; you can't run this command now" be addressed when using mysqli in PHP?

When using mysqli in PHP, the error "Commands out of sync; you can't run this command now" typically occurs when you try to execute multiple queries without fetching the results of the previous query. To solve this issue, you need to ensure that you fetch all the results of a query before executing the next query. 

// Perform a query
$result = $mysqli->query("SELECT * FROM users");

// Fetch all the results
while ($row = $result->fetch_assoc()) {
    // Process the results
}

// Free the result set
$result->free();

// Perform the next query
$result2 = $mysqli->query("SELECT * FROM orders");

// Fetch all the results of the second query
while ($row2 = $result2->fetch_assoc()) {
    // Process the results
}

// Free the result set of the second query
$result2->free();

Keywords

mysqli PHP error Commands out of sync database

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