Feed标题中的撇号会产生错误

Question

当我尝试生成Feed时，浏览器中的标题'被解释为’浏览器会在字符’处生成错误，MySql包含{ {1}}而不是'我尝试用PHP替换但不工作。

’

Browser

MySql

任何解决方案？

标题设置正确（我认为）

$domanda = mysqli_query($conn, "SELECT * FROM wp_posts WHERE post_status = 'publish' and post_type = 'post' AND DATE(post_modified) > DATE(post_date) ORDER BY post_modified DESC LIMIT 50");
    $numrss = mysqli_num_rows($domanda);
    while ($info = $domanda->fetch_array(MYSQLI_ASSOC))
    {
    $primodato=$info['post_title'];
    echo "<item>
    <title><![CDATA[".str_replace("'"," ",$primodato)."]]></title>";