What steps can be taken to properly debug a PHP script that is not inserting data into a table as expected?

To properly debug a PHP script that is not inserting data into a table as expected, you can start by checking for any errors in the SQL query, connection to the database, or data being passed to the query. You can also use functions like mysqli_error() to get more information about any errors that may be occurring. Additionally, you can echo out variables to see if the data is being passed correctly. 

// Example PHP script to debug data insertion issue

// Establish connection to the database
$connection = mysqli_connect("localhost", "username", "password", "database");

// Check connection
if (!$connection) {
    die("Connection failed: " . mysqli_connect_error());
}

// Sample data to be inserted
$name = "John Doe";
$email = "johndoe@example.com";

// SQL query to insert data into a table
$sql = "INSERT INTO users (name, email) VALUES ('$name', '$email')";

// Execute the query
if (mysqli_query($connection, $sql)) {
    echo "Data inserted successfully!";
} else {
    echo "Error: " . $sql . "<br>" . mysqli_error($connection);
}

// Close the connection
mysqli_close($connection);

Keywords

PHP debugging data insertion SQL error handling

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