Most popular web site - BRINGING FORMS TO LIFE other whitespace ahead of
BRINGING FORMS TO LIFE other whitespace ahead of the opening PHP tag. Also check any include files for white- space and new lines before the opening PHP tag and after the closing one. The error is frequently triggered by a single new line after the closing tag of an include file. Summary What began as a slender 50 lines of XHTML and PHP at the beginning of the chapter has grown by nearly 300 lines, of which about 100 process the form content ready for sending by email. This may seem like a lot if you have a phobia about code, but the most important sections of code (in PHP Solutions 5-5 and 5-6) filter out suspect input and should never need changing. Once you have built the script above the DOCTYPE declaration, you can copy and paste it into any form or use an include file. The only parts that need tweaking are the $expected and $required arrays and the section that builds the body of the email message. In order to concentrate on the mechanics of working with forms, I have kept the body of the message plain and simple. However, once you have extracted the form contents into variables, such as $name, $email, and so on, you can incorporate them into an email message any way you like. I ve also avoided talking about HTML email because the mail() function handles only plain text email. The PHP online manual at www.php.net/manual/en/function.mail.php shows a way of sending HTML mail by adding an additional header. However, it s not a good idea, as HTML mail should always contain an alternative text version for email programs that don t accept HTML. If you want to send HTML mail or attachments, I suggest that you use the PHPMailer class. It s open source and is available for free from http:// phpmailer.sourceforge.net/. The site has a tutorial showing you how to use it. As you ll see in later chapters, online forms lie at the heart of just about everything you do with PHP. They re the gateway between the browser and the web server. You ll come back time and again to the techniques that you have learned in this chapter. 149
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