title: PHP mail function 'from' address
body: <p>I'm not even sure this is possible, however what I'm trying to do is as follows. I have an HTML form that generates and email using a <code>PHP</code> script. What I want is to recieve emails from this form to <code>abc@xyz.com</code>, then I want the <code>from</code> address to appear as one of the fields in the form.</p>
  
  <p>I have had a look around and found some useful information on this <a href="http://www.w3schools.com/php/php_ref_mail.asp" rel="noreferrer">site</a>. I'm not sure whether <code>sendmail_from</code> can be used in this situation, or if it does what I'm asking.</p>
  
  <p>Is this possible, if so how?</p>