How can PHP developers troubleshoot issues with data not displaying correctly on a webpage?

To troubleshoot issues with data not displaying correctly on a webpage, PHP developers can start by checking the database query to ensure it is retrieving the correct data. They can also inspect the data being passed to the frontend to see if it is formatted correctly. Additionally, developers can use debugging tools like var_dump() or print_r() to examine the data structure and identify any issues. 

// Example code snippet to troubleshoot data display issue
// Check database query to ensure correct data retrieval
$query = "SELECT * FROM table_name WHERE condition";
$result = mysqli_query($connection, $query);

// Check data formatting before passing to frontend
if($result){
    while($row = mysqli_fetch_assoc($result)){
        // Check data structure using var_dump() or print_r()
        var_dump($row);
        // Display data on webpage
        echo $row['column_name'];
    }
}

Keywords

PHP troubleshooting data display webpage debugging

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