Check for user-agent then show only specified contents in WordPress

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I have a WordPress website and want to show a specified content to a user who have a specified User-agent. Here is what I’ve done: 

<?php
$user_agent = $_SERVER['HTTP_USER_AGENT']; 
if (strpos( $user_agent, 'CostumizedAgent') !== false)
{
echo "<html><body>Show Only this codes</body></html>
}
else
{
// Show normal website
}
?>

In the condition where user agent doesn’t contain CostumizedAgent word, normal website will be shown to the user (a normal wordpress website) but if contains word CostumizedAgent it’ll only echo a specified HTML code to the user. I use this to create a simple secretly content! (I know it’s no the way it should be done :D)

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So, what should I do? Which codes I have to put in else place? Where should I put all the codes to work? (on all pages of website)

Post Views: 2

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1 comment

  1. The better way to do that is to create a separate theme for your other user agent. Assuming you want to create a mobile version of your website, this is what you’ll have to put in the functions.php of your desktop (default) theme :

    function change_theme($current_theme) {
    $user_agent = $_SERVER['HTTP_USER_AGENT']; 
    if(strpos( $user_agent, 'CostumizedAgent') !== false) {
        return 'mobile-theme';
    } else {
        return $current_theme;
    }
}
add_filter( 'stylesheet', 'change_theme' );
add_filter( 'template', 'change_theme' );

    This will programmaticaly change the theme based on the user agent, and tell WordPress to use the mobile-theme theme if the user agent condition is satisfied.

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