In the context of PHP, what are some common pitfalls that developers may encounter when working with MySQL queries and result resources?

One common pitfall when working with MySQL queries and result resources in PHP is not properly freeing up the resources after executing a query. This can lead to memory leaks and potential performance issues. To solve this, developers should always free the result resource using the `mysqli_free_result()` function after fetching the data they need. 

// Execute a query
$query = "SELECT * FROM users";
$result = mysqli_query($connection, $query);

// Fetch data
while ($row = mysqli_fetch_assoc($result)) {
    // Process data
}

// Free result resource
mysqli_free_result($result);

Keywords

MySQL queries result resources data retrieval error handling SQL injection

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