What common debugging techniques can be used to troubleshoot issues with PHP scripts not adding data to a MySQL database?

One common debugging technique to troubleshoot issues with PHP scripts not adding data to a MySQL database is to check for errors in the SQL query being executed. This can be done by printing out the query before execution to ensure it is formatted correctly. Additionally, checking for any error messages returned by the MySQL database can provide insights into what might be going wrong. 

// Example PHP code snippet to troubleshoot adding data to a MySQL database

// Check for errors in the SQL query
$query = "INSERT INTO table_name (column1, column2) VALUES ('$value1', '$value2')";
echo "Query: " . $query; // Print out the query before execution

// Execute the query
$result = mysqli_query($connection, $query);

// Check for any errors returned by the MySQL database
if (!$result) {
    die('Error: ' . mysqli_error($connection));
} else {
    echo "Data added successfully!";
}

Keywords

PHP MySQL debugging data insertion troubleshooting

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