我的PHP部分显示在浏览器中

Question

I am trying to add php to my website to send an email when the user clicks a submit button. For some reason, a section of my php is displaying in the browser and I can't figure out why. I've looked up information and tried checking my quotes and things like that, but I don't see what would be causing a portion of it to display as text.

<?php
    $action=$_REQUEST['action'];

    if ($action=="") /* display the contact form */
    {
?>
        <form id="Contact-Form" action="" method="POST" enctype="multipart/form-data">
            <div class="row">
                <label for="name">Your name:</label><br />
                    <input id="name" class="input" name="name" type="text" value="" size="30" /><br />
            </div>
            <div class="row">
                <label for="email">Your email:</label><br />
                    <input id="email" class="input" name="email" type="text" value="" size="30" /><br />
            </div>
            <div class="row">
                <label for="message">Your message:</label><br />
                    <textarea id="message" class="input" name="message" rows="7" cols="30"></textarea><br />
            </div>
            <input id="Submit-Button" type="submit" value="Send email" />
        </form> 
<?php
    } 
    else /* send the submitted data */
    {
        $name=$_REQUEST['name'];
        $email=$_REQUEST['email'];
        $message=$_REQUEST['message'];

        if (($name=="")||($email=="")||($message==""))
        {
            echo "All fields are required, please fill the form again.";
        }
        else
        {        
            $from="From: $name<$email>\r\n Return-path: $email";
            $subject="Message sent using your contact form";
            mail("email@gmail.com", $subject, $message, $from);
            echo "Email sent!";
        }
    }  
?>

Answer 1

To explain why this happens...

Notice how the portion of code shown is only the bit after <$email> in your code? Specifically that > .

When you open a PHP file in your browser without a server processing it first, most PHP code will be seen by the browser as just one big, invalid HTML tag and will not be shown, except in View Source and document inspector tools. However, since your code happens to contain a > , this marks the end of the "invalid HTML tag" and anything after it will be seen in the page.

To fix this, use a server! PHP has one built-in as of 5.4, so if you have it installed on your machine you can open a command line in the root folder of your PHP and run:

php -S localhost:8000

Then open a browser and go to http://localhost:8000/yourfile.php and it will run. Nifty!