php to excel encoding - php

Question

hello i have this code to export my data from to .xls but i have problem with encoding, this is my code
<?php
header("Content-Type: text/plain;charset=UTF-8");
function cleanData(&$str)
{
$str = preg_replace("/\t/", "\\t", $str);
$str = preg_replace("/\r?\n/", "\\n", $str);
if(strstr($str, '"')) $str = '"' . str_replace('"', '""', $str) . '"';
}
// filename for download
$filename = "website_data_" . date('Ymd') . ".xls";
header("Content-Disposition: attachment; filename=\"$filename\"");
header("Content-Type: application/vnd.ms-excel; charset=UTF-8");
$data = array(
array('firstname' =>'Name', 'last_name' => 'Last Name', 'age' => '25'),
array('firstname' =>'name 2', 'last_name' => 'Last Name 2', 'age' => '27')
);
$flag = false;
foreach($data as $row) {
if(!$flag) {
// display field/column names as first row
echo implode("\t", array_keys($row)) . "\r\n";
$flag = true;
}
array_walk($row, 'cleanData');
echo implode("\t", array_values($row)) . "\r\n";
}
exit;
?>
I try the Encoding iso-8859-7, and windows-1253, and UTF-8 i want to export with greek characters all my data is in UTF-8. Thank you for help

Answer 1

<?php
include('connect.php');
header("Content-Type: text/plain; charset=UTF-8");
function cleanData(&$str)
{
if($str == 't') $str = 'TRUE';
if($str == 'f') $str = 'FALSE';
if(preg_match("/^0/", $str) || preg_match("/^\+?\d{8,}$/", $str) || preg_match("/^\d{4}.\d{1,2}.\d{1,2}/", $str)) {
$str = "'$str";
}
if(strstr($str, '"')) $str = '"' . str_replace('"', '""', $str) . '"';
}
// filename for download
$filename = "website_data_" . date('Ymd') . ".csv";
header("Content-Disposition: attachment; filename=\"$filename\"");
header("Content-Type: text/csv; charset=UTF-8");
$out = fopen("php://output", 'w');
$flag = false;
$result = mysql_query("SELECT * FROM categories ORDER BY id") or die('Query failed!');
while(false !== ($row = mysql_fetch_assoc($result))) {
if(!$flag) {
// display field/column names as first row
fputcsv($out, array_keys($row), ',', '"');
$flag = true;
}
array_walk($row, 'cleanData');
fputcsv($out, array_values($row), ',', '"');
}
fclose($out);
exit;
?>
I change my code and in text editor i can see my characters is fine and the encoding is in greek, but when i open in microsoft excel it's unreadable