How can developers troubleshoot issues with data output discrepancies in PHP scripts?

Issue: Developers can troubleshoot data output discrepancies in PHP scripts by checking for errors in data processing, ensuring proper data formatting, and verifying the accuracy of data retrieval from databases or external sources. 

// Example PHP code snippet to troubleshoot data output discrepancies

// Check for errors in data processing
if ($error) {
    echo "Error processing data";
}

// Ensure proper data formatting
$data = "12345";
$formatted_data = number_format($data);
echo $formatted_data;

// Verify the accuracy of data retrieval from databases or external sources
$query = "SELECT * FROM table";
$result = mysqli_query($connection, $query);
if (!$result) {
    echo "Error retrieving data from database";
} else {
    while ($row = mysqli_fetch_assoc($result)) {
        echo $row['column_name'];
    }
}

Keywords

data output discrepancies troubleshooting PHP scripts error types

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