What are the potential pitfalls of using SELECT * queries in PHP, as seen in the forum thread?

Using SELECT * queries in PHP can lead to performance issues and potential security vulnerabilities. It is recommended to explicitly specify the columns you want to retrieve in the SELECT statement to avoid unnecessary data fetching and improve query performance. Additionally, selecting only the necessary columns can prevent exposing sensitive information in case of SQL injection attacks. 

// Specify the columns to retrieve instead of using SELECT *
$query = "SELECT column1, column2, column3 FROM table_name WHERE condition = 'value'";
$result = mysqli_query($conn, $query);

// Fetch data using the specified columns
while ($row = mysqli_fetch_assoc($result)) {
    // Process the retrieved data
}

Keywords

SQL injection performance security data leakage maintenance

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