What steps should be taken to troubleshoot and resolve issues related to fetching data from a database using mysqli in PHP?

To troubleshoot and resolve issues related to fetching data from a database using mysqli in PHP, you should first check the connection to the database, ensure that the SQL query is correct, and handle any errors that may occur during the fetching process. 

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

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

// Perform a SQL query to fetch data
$query = "SELECT * FROM table_name";
$result = mysqli_query($connection, $query);

// Check if the query was successful
if (!$result) {
    die("Query failed: " . mysqli_error($connection));
}

// Fetch and display the data
while ($row = mysqli_fetch_assoc($result)) {
    echo $row['column_name'] . "<br>";
}

// Close the connection
mysqli_close($connection);

Keywords

mysqli database troubleshooting data fetching PHP

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