What potential issue could arise when using while loops in PHP scripts for database queries?

One potential issue that could arise when using while loops in PHP scripts for database queries is an infinite loop if the loop condition is not properly defined or updated within the loop. To solve this issue, it is important to ensure that the loop condition is based on the result of the database query, and that the loop variable is updated within the loop to eventually break out of the loop. 

// Example of using a while loop for database queries with proper condition and update
$query = "SELECT * FROM users";
$result = mysqli_query($conn, $query);

if(mysqli_num_rows($result) > 0) {
    while($row = mysqli_fetch_assoc($result)) {
        // Process each row of the query result
    }
} else {
    echo "No results found.";
}

Keywords

while loop PHP scripts database queries infinite loop SQL injection

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