I would like to know how to append a variable to a link in PHP. I am grabbing the parameter by using $lang = $_GET['lang'];.
I would like to append the $lang variable to the link like below.
<li><a href="/categories/?lang=$lang">Categories</a></li>
You can use the PHP function http_build_query
http://php.net/manual/en/function.http-build-query.php
--EDIT--
<?php
$url = "/categories/?";
$querystring_parameters = array('lang'=>$_GET['lang']);
$url .= http_build_query($querystring_parameters);
?>
<li><a href="<?php echo $url; ?>">Categories</a></li>
lang value: $querystring_parameters = $_GET;. Or only use $_GET ;-)filter_input(INPUT_GET, 'lang') and then check if the value is set/empty/valid, I don't know if it would seem too paranoic :)http_build_query will correctly encode the string but even if it didn't, the visitor would only be messing with themselves. But it is definitely always good to think about and if you don't need anything else, don't add it.Just echo it in PHP like:
<li><a href="/categories/?lang=<?php echo $lang; ?>">Categories</a></li>
Try this:
<li><a href="/categories?lang=<?php echo $lang; ?>&var1=<?php echo $value1; ?>">Categories</a></li>
OR
<?php echo '<li><a href="/categories?lang=$lang&var1=$value1">Categories</a></li>'; ?>
You mean like this?
Echo "<li><a href='/categories/?lang=".$lang."'>Categories</a></li>";
The ". and ." means it escapes string so $lang is the value of $lang.
EDIT:The above code needs to be inside php tags. So:
<?php
Echo "<li><a href='/categories/?lang=".$lang."'>Categories</a></li>";
?>
