What are the potential pitfalls of not using a while loop when fetching data from a MySQL database in PHP?

When fetching data from a MySQL database in PHP, not using a while loop can result in only retrieving the first row of data from the database, leaving out the rest of the results. To ensure that all rows of data are fetched and processed, a while loop should be used to iterate through each row of the result set. 

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

// Query to fetch data from the database
$query = "SELECT * FROM table_name";
$result = mysqli_query($connection, $query);

// Use a while loop to fetch and process each row of data
while ($row = mysqli_fetch_assoc($result)) {
    // Process the data from each row
    echo $row['column_name'] . "<br>";
}

// Close the database connection
mysqli_close($connection);

Keywords

MySQL database while loop fetching data PHP

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