In what ways can the output of PHP scripts be compared to the actual database values to troubleshoot discrepancies in data updating processes?

When troubleshooting discrepancies in data updating processes between PHP scripts and the database, one way to compare the output of PHP scripts to the actual database values is by retrieving the data from the database and comparing it with the output of the PHP script. This can help identify any inconsistencies or errors in the data updating process.

// Retrieve data from the database
$query = "SELECT * FROM table_name";
$result = mysqli_query($connection, $query);

if(mysqli_num_rows($result) > 0){
    while($row = mysqli_fetch_assoc($result)){
        // Compare database values with PHP script output
        // For example, you can echo or var_dump the values for comparison
        echo "Database value: " . $row['column_name'] . " | PHP script output: " . $variable;
    }
}