[Php] Utilisation de variable

foreach($_POST AS $key=>$value) ${strToLower($key)}=$value;
foreach($_GET AS $key=>$value) ${strToLower($key)}=$value;

_REQUEST["tip"]
_REQUEST["service"]	(c'est celle là qui m'intérresse)
_REQUEST["fonction"]	
_REQUEST["UNADFI_data"]	
_REQUEST["wanewsletter_data"]	
_REQUEST["UNADFI_listeid"]	
_GET["tip"]	
_GET["service"]	(elle m'intérésse toujours)
_GET["fonction"]

require_once 'Spreadsheet/Excel/Writer.php';

// Creating a workbook
$workbook = new Spreadsheet_Excel_Writer();

// sending HTTP headers
$workbook->send('test.xls');

// Creating a worksheet
$worksheet =& $workbook->addWorksheet('My first worksheet');

// The actual data
$worksheet->write(0, 0, 'Name');
$worksheet->write(0, 1, 'Age');
$worksheet->write(1, 0, 'John Smith');
$worksheet->write(1, 1, 30);
$worksheet->write(2, 0, 'Johann Schmidt');
$worksheet->write(2, 1, 31);
$worksheet->write(3, 0, 'Juan Herrera');
$worksheet->write(3, 1, 32);

// Let's send the file
$workbook->close();

$worksheet =& $workbook->addWorksheet('My first worksheet');

foreach($_GET AS $key=>$value) ${strToLower($key)}=$value;

foreach($_POST AS $key=>$value) ${strToLower($key)}=$value;