php - Check ulr before redirect -


im trying fix site issue on friend's site. let's call "www.original.com". has domain; "www.alias.com". used alias www.original.com.

so here's situation: claims logo used different if entered site www.alias.com. currently, www.alias.com , www.original.com sites identical.

the code has following function:

function check_domain($d){     $domain = filter_input(input_server, 'http_host', filter_sanitize_string);     return substr_count($domain, $d); }

and in header makes following check:

<?php if (check_domain('original')): ?>     <a href="<?php bloginfo('url'); ?>" id="logo"><img src="images/logo.png" alt="<?php bloginfo('name'); ?>"></a>  <?php elseif (check_domaine('alias')): ?>     <a href="<?php bloginfo('url'); ?>" id="logo-x"><img src="images/logo_x.png" alt="<?php bloginfo('name'); ?>"></a>

how can make check correct again? dns-change made not work?


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