What potential issues can arise from using "SELECT *" in MySQL queries in PHP scripts?

Using "SELECT *" in MySQL queries can lead to performance issues and potential security vulnerabilities. It's best practice to explicitly specify the columns you want to retrieve to avoid unnecessary data retrieval and to prevent exposing sensitive information. By specifying the columns, you can also make your code more maintainable and readable. 

// Specify the columns you want to retrieve instead of using SELECT *
$query = "SELECT column1, column2, column3 FROM table_name";
$result = mysqli_query($connection, $query);

// Fetch and process the results
while ($row = mysqli_fetch_assoc($result)) {
    // Process the data
}

Keywords

MySQL SELECT * PHP scripts performance security

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