What are the potential issues with using while loops to fetch data from a MySQL database in PHP?

Potential issues with using while loops to fetch data from a MySQL database in PHP include the risk of memory exhaustion if a large amount of data is fetched at once, as all the data will be stored in memory until the loop finishes. To solve this issue, you can fetch data in smaller chunks using LIMIT and OFFSET in your SQL query. 

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

// Query to fetch data in chunks
$query = "SELECT * FROM table LIMIT 100 OFFSET 0";
$result = mysqli_query($connection, $query);

// Fetch and process data in chunks
while ($row = mysqli_fetch_assoc($result)) {
    // Process data here
}

// Close database connection
mysqli_close($connection);

Keywords

MySQL while loop data fetching PHP performance

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