Xml from mysql

whats wrong with this

<?php
header(“Content-type: text/xml”);
require(“includes/db_setup.php”);
$query = “SELECT entryTitle, entryText FROM tblEntries”;
$resultID = mysql_query($query, $linkID) or die(“Data not found.”);
$xml_output = “<?xml version="1.0"?>
“;
$xml_output .= “<entries>
“;
for($x = 0 ; $x < mysql_num_rows($resultID) ; $x++){
$row = mysql_fetch_assoc($resultID);
$xml_output .= " <entry>
“;
$xml_output .= " <entryTitle>” . $row[‘entryTitle’] . “</entryTitle>
“;
// Escaping illegal characters
$row[‘text’] = str_replace(”&”, “&”, $row[‘entryText’]);
$row[‘text’] = str_replace(”<”, “<”, $row[‘entryText’]);
$row[‘text’] = str_replace(”>”, “>”, $row[‘entryText’]);
$row[‘text’] = str_replace(“"”, “"”, $row[‘entryText’]);
$xml_output .= " <entryText>" . $row[‘entryText’] . "</entryText>
";
$xml_output .= " </entry>
";
}
$xml_output .= “</entries>”;
echo $xml_output;
?>

error cant see what ive done wrong !