how to convert $_GET and include from php to EE tags

Question

How can i convert the following code to EE Tags?

<?php 
if($_GET['rel']!='tab'){
    include 'header.php';
}
?>

I've used this with enabling the template to PHP, but i get the following error.

A PHP Error was encountered

Severity: Notice

Message: Undefined index: del

Filename: libraries/Functions.php(683) : eval()'d code

Line Number: 5

Thanks

Answer 1

There are a handful of addons that convert $_GET and $_POST variables to EE variables. This search might get you started. My favorite is Mo’ Variables, which converts them to global variables (of the early-parsed sort) like {get:rel}.

As for including, I'm not sure what your header.php file contains, but if it's more template code you could use an embedded template. Make a template group (say, embeds) and a template (header):

{if get:rel != 'tab'}
  {embed='embeds/header'}
{/if} 

If you do directly include the PHP file, make sure header.php doesn't use echo as that will result in PHP errors.

Answer 2

If your going to pull in GET values you should scrub it: $this->EE->input->get('rel', TRUE); ref http://ellislab.com/expressionengine/user-guide/development/usage/input.html

if ($this->EE->input->get('rel', TRUE) != 'tab'){ echo "{embed=\"site/header\"}"; }

With php parsed on input. If this is in a template the EE super global is already loaded. ( $this->EE =& get_instance();)

Answer 3

Two things:

1. Your error message says Undefined index: del and your code example references $_GET['rel'] -- There's no typo at play here, is there?

2. Try this?

Set PHP to run on Input.

<?php 
if($_GET['rel']!='tab'){
?>
<embed="template_group/header_template"> // With PHP enabled if you need
<?
}
?>

Answer 4

As far as I know the $_GET and $_POST variables (among others) are not available in templates. To accomplish something like this you could use url segments. So in you're example you may have a link like this: domain.com?rel=tab. Instead you may be able to do this: domain.com/tab. Then in your template (no PHP required) you can do this:

{if segment_1 == "tab"}
    {embed="site/header"}
{/if}

Where site/header is a template containing whatever code is in header.php. Note that the /tab could be any segment and change the conditional accordingly. I realize using segments instead of GET parameters may not always work, but this is how I have gotten around this problem myself a few times.