What role does the internal pointer play in fetching MySQL query results into an array in PHP, and how can it be managed effectively?

When fetching MySQL query results into an array in PHP, the internal pointer helps to keep track of the current row being fetched. To manage it effectively, you can use functions like mysqli_data_seek() to move the pointer to a specific row or mysqli_data_seek() to reset the pointer back to the beginning. 

// Fetching MySQL query results into an array with managed internal pointer
$query = "SELECT * FROM table";
$result = mysqli_query($connection, $query);

$data = array();
while ($row = mysqli_fetch_assoc($result)) {
    $data[] = $row;
}

// Reset internal pointer to beginning
mysqli_data_seek($result, 0);

// Access data from the beginning
while ($row = mysqli_fetch_assoc($result)) {
    print_r($row);
}

Keywords

MySQL PHP internal pointer fetching array

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