To retrieve a worksheet's list feed, use the getListFeed method of the Spreadsheets service.

<?php
$query = new Zend_Gdata_Spreadsheets_ListQuery();
$query->setSpreadsheetKey($spreadsheetKey);
$query->setWorksheetId($worksheetId);
$listFeed = $spreadsheetService->getListFeed($query);
?>

The resulting Zend_Gdata_Spreadsheets_ListFeed object $listfeed represents a response from the server. Among other things, this feed contains an array of Zend_Gdata_Spreadsheets_ListEntry objects ($listFeed->entries), each of which represents a single row in a worksheet.

Each Zend_Gdata_Spreadsheets_ListEntry contains an array, custom, which contains the data for that row. You can extract and display this array:

<?php
$rowData = $listFeed->entries[1]->getCustom();
foreach($rowData as $customEntry) {
  echo $customEntry->getColumnName() . " = " . $customEntry->getText();
}
?>

By default, rows in the feed appear in the same order as the corresponding rows in the GUI; that is, they're in order by row number. To get rows in reverse order, set the reverse properties of the Zend_Gdata_Spreadsheets_ListQuery object to true:

<?php
$query = new Zend_Gdata_Spreadsheets_ListQuery();
$query->setSpreadsheetKey($spreadsheetKey);
$query->setWorksheetId($worksheetId);
$query->setReverse('true');
$listFeed = $spreadsheetService->getListFeed($query);
?>

Note that if you want to order (or reverse sort) by a particular column, rather than by position in the worksheet, you can set the orderby value of the Zend_Gdata_Spreadsheets_ListQuery object to column:<the header of that column>.

You can set a Zend_Gdata_Spreadsheets_ListQuery's sq value to produce a feed with entries that meet the specified criteria. For example, suppose you have a worksheet containing personnel data, in which each row represents information about a single person. You wish to retrieve all rows in which the person's name is "John" and the person's age is over 25. To do so, you would set sq as follows:

<?php
$query = new Zend_Gdata_Spreadsheets_ListQuery();
$query->setSpreadsheetKey($spreadsheetKey);
$query->setWorksheetId($worksheetId);
$query->setSpreadsheetQuery('name=John and age>25');
$listFeed = $spreadsheetService->getListFeed($query);
?>

Rows can be added to a spreadsheet by using the insertRow method of the Spreadsheet service.

<?php
$insertedListEntry = $spreadsheetService->insertRow($rowData, $spreadsheetKey, $worksheetId);
?>

The $rowData parameter contains an array of column keys to data values. The method returns a Zend_Gdata_Spreadsheets_SpreadsheetsEntry object which represents the inserted row.

Spreadsheets inserts the new row immediately after the last row that appears in the list-based feed, which is to say immediately before the first entirely blank row.

Once a Zend_Gdata_Spreadsheets_ListEntry object is fetched, its rows can be updated by using the updateRow method of the Spreadsheet service.

<?php
$updatedListEntry = $spreadsheetService->insertRow($oldListEntry, $newRowData);
?>

The $oldListEntry parameter contains the list entry to be updated. $newRowData contains an array of column keys to data values, to be used as the new row data. The method returns a Zend_Gdata_Spreadsheets_SpreadsheetsEntry object which represents the updated row.

To delete a row, simply invoke deleteRow on the Zend_Gdata_Spreadsheets object with the existing entry to be deleted:

<?php
$spreadsheetService->deleteRow($listEntry);
?>

Alternatively, you can call the delete method of the entry itself:

<?php
$listEntry->delete();
?>

To retrieve a worksheet's cell feed, use the getCellFeed method of the Spreadsheets service.

<?php
$query = new Zend_Gdata_Spreadsheets_CellQuery();
$query->setSpreadsheetKey($spreadsheetKey);
$query->setWorksheetId($worksheetId);
$cellFeed = $spreadsheetService->getCellFeed($query);
?>

The resulting Zend_Gdata_Spreadsheets_CellFeed object $cellFeed represents a response from the server. Among other things, this feed contains an array of Zend_Gdata_Spreadsheets_CellEntry objects ($cellFeed>entries), each of which represents a single cell in a worksheet. You can display this information:

<?php
foreach($cellFeed as $cellEntry) {
  $row = $cellEntry->cell->getRow();
  $col = $cellEntry->cell->getColumn();
  $val = $cellEntry->cell->getText();
  echo "$row, $col = $val\n";
}
?>

Suppose you wanted to retrieve the cells in the first column of a worksheet. You can request a cell feed containing only this column as follows:

<?php
$query = new Zend_Gdata_Spreadsheets_CellQuery();
$query->setMinCol(1);
$query->setMaxCol(1);
$query->setMinRow(2);
$feed = $spreadsheetService->getCellsFeed($query);
?>

This requests all the data in column 1, starting with row 2.

To modify the contents of a cell, call updateCell with the row, column, and new value of the cell.

<?php
$updatedCell = $spreadsheetService->updateCell($row, $col, $inputValue, $spreadsheetKey, $worksheetId);
?>

The new data is placed in the specified cell in the worksheet. If the specified cell contains data already, it will be overwritten. Note: Use updateCell to change the data in a cell, even if the cell is empty.