Remove parameter from URL PHP

If you are looking to remove a specific parameter from the URL here is how to do it:

Assume you have URL
http://www.b4blinky.com/index.php?option=com_content&view=article&id=1
And you want to remove the id


$currURL = $_SERVER[QUERY_STRING];
//this will get you option=com_content&view=article&id=1
parse_str($currURL,$params); //Puts the url parameters in key=>value pair
//This will give you option=>com_content, view=>article, id=>1
unset($params[$fieldName]);  //Removes the parameter on which 'x' is clicked
//This will remove the $fieldName from the array e.g. 'id'
$newURL = http_build_query($params); //Rebuilds the query with the remaining parameters
//This will rebuild array excluding id
$newURL = 'index.php?'.$newURL;
//and finally your newURL like
index.php?option=com_content&view=article

That you can modify if relative doesn't work for you.

Hope it helps. Happy coding :)

How to get a URL variable in Joomla

If you want to get a variable from URL the command is simply

$id = JRequest::getVar('id');

It will give you the value of 'id' if its in your url like:

http://www.b4blinky.com/index.php?id=1

However if you don't have an 'id' var in URL it will return you NULL, so if you want to have a default value of let's say zero you can use this

$id = JRequest::getVar('id','0');

Especially useful when you want to have some default views etc.