PHP equivalent of ColdFusion <CFABORT>

I'm rewriting an application to PHP from ColdFusion.

There's a handy ColdFusion tag called <CFABORT>.  It basically stops execution, such as may be appropriate after someone has entered a bad password.  Without this tag, one has to use more if/else logic and it can get tedious.  

For example, with CFABORT, you can code:

<CFIF PasswordStatus IS "Bad">
  BAD PASSWORD! GO AWAY!
  <CFABORT>
</CFIF>
Hi!  
Welcome to our site, authorized user
etc.

Without CFABORT, you'd have to code:

For example, with CFABORT, you can code:

<CFIF PasswordStatus IS "Bad">
  BAD PASSWORD! GO AWAY!
  <CFABORT>
<CFELSE>
  Hi!  
  Welcome to our site, authorized user
  etc.
</CFIF>

Thanks.