What type of redirect is header("Location: $url ?

[johnsmith153]

For SEO purposes I am told that either 301/302 redirects are better.

 

I use header("Location: $url everywhere, is this 301 or 302 ?

 

Also, I see somewhere that this is the proper way to do it.

header ('HTTP/1.1 301 Moved Permanently');
header ('Location: '.$location);

.. what if I didn't use the first line (I have sites all over the place littered with header Location, but have only used the 2nd line)? Would it make a difference - it works that's for sure.

[AbraCadaver]

With the first line it is a 301, if you omit the first line it defaults to a 302.