What are the potential pitfalls of not handling the case where no entries are found in a database query using PHP?

If the case where no entries are found in a database query is not handled in PHP, it can lead to errors or unexpected behavior in your application. To prevent this, you should check if there are any results returned from the query and handle the case where there are no entries found. 

// Execute the database query
$result = mysqli_query($connection, "SELECT * FROM table WHERE condition");

// Check if any rows were returned
if(mysqli_num_rows($result) > 0) {
    // Process the results
    while($row = mysqli_fetch_assoc($result)) {
        // Do something with the data
    }
} else {
    // Handle case where no entries are found
    echo "No entries found.";
}

// Free the result set
mysqli_free_result($result);

Keywords

MySQL PDO fetch rowCount error handling

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