PHP联系表单不发送邮件

Question

我在网上找到了一个内置HTML联系表单的模板。我一直在尝试添加一个有效的PHP脚本来使其工作。这是HTML表单

<div class="span_of_2">
			<div class="span_1_of_2">
				<div class="contact-form">
				<form method="action" action="contact-post.php">
					    	<div>
						    	<span><label>name</label></span>
						    	<span><input name="userName" type="text" class="textbox"></span>
						    	<div class="clear"></div>
						    </div>
						    <div>
						    	<span><label>e-mail</label></span>
						    	<span><input name="userEmail" type="text" class="textbox"></span>
						    	<div class="clear"></div>
						    </div>
						    
						    <div>
						    	<span><label>Message</label></span>
						    	<span><textarea name="userMsg"> </textarea></span>
						    	<div class="clear"></div>
						    </div>
						   <div>
						   		<span><input type="submit" class="" value="Send"></span>
						  </div>	
				  </form>
				</div>
			</div>

这是我的contact-post.php

 {
$name=$_REQUEST['userName'];
$email=$_REQUEST['userEmail'];
$message=$_REQUEST['userMsg'];
if (($name=="")||($email=="")||($message==""))
    {
    echo "All fields are required, please fill <a href=\"\">the form</a> again.";
    }
else{        
    $from="From: $name<$email>\r\nReturn-path: $email";
    $subject="Message sent using your contact form";
    mail("youremail@yoursite.com", $subject, $message, $from);
    echo "Email sent!";
    }
}  

＆GT;

而不是PHP文档执行它的操作它只需要我/ctact-post.php只是带有代码行的文档。谁能协助我纠正我的代码？我非常感激。