How can PHP queries be optimized to prevent errors like "mysql_fetch_object(): supplied argument is not a valid MySQL result resource"?

The error "mysql_fetch_object(): supplied argument is not a valid MySQL result resource" occurs when the query result is not valid due to an issue in the SQL query or connection. To prevent this error, ensure that the query is executed successfully and that the result is a valid MySQL result resource before fetching data from it. 

// Check if the query was successful before fetching data
$result = mysqli_query($connection, $query);
if($result && mysqli_num_rows($result) > 0) {
    while($row = mysqli_fetch_object($result)) {
        // Process data here
    }
} else {
    // Handle error or display a message
}

Keywords

PHP queries optimization mysql_fetch_object() MySQL

Related Questions