CodeIgniter - 从数组中获取下一条记录

Question

I get all data from a table to a array :

$records = $this->Misc->getAll('table');

Next I made a loop

foreach ($records as $key => $record) {     
    // here i want to update a column in the fist
    // row with a value from the second row
    $this->Misc->update($record->id; $value_of_a_column_from_the_next_row);
}

How can I do this? Thanks

Answer 1

you can use your foreach loop like:

foreach ($records as $key => $record) {
    if (isset($records[$key-1]) {
        $updateID = $records[$key-1];
        $this->Misc->update($updateID, $record['field'] );
    }
}

or the other way around:

foreach ($records as $key => $record) {
    if (isset($records[$key+1]) {
        $updateID = $records[$key+1];
        $this->Misc->update($updateID, $record['field'] );
    }
}