Hey there! Working with WordPress hooks can be quite an adventure, right? Today, we are diving into the fascinating world of the http_headers_useragent filter. This handy hook allows you to filter the user agent value sent with an HTTP request. Let’s explore how you can use it effectively!
Live Example 1: Modifying User Agent
Here’s a simple example to get you started. In this scenario, we modify the user agent value based on specific requirements.
function weplugins_modify_http_headers_useragent_defaults($user_agent, $url) {
// Update the $user_agent variable according to your website requirements and return this variable.
return $user_agent;
}
// add the filter
add_filter("http_headers_useragent", "weplugins_modify_http_headers_useragent_defaults", 10, 2);
Live Example 2: Removing a Filter
Sometimes, you might want to remove a filter that has been previously added. Here’s how you can do that.
remove_filter("http_headers_useragent", "weplugins_modify_http_headers_useragent_defaults", 10, 2);
Ensure you provide the same callback function name, priority, and number of arguments when removing the hook callback.
Live Example 3: Conditional User Agent Modification
This example demonstrates how you can modify the user agent conditionally, depending on the URL or other parameters.
function weplugins_conditional_http_headers_useragent($user_agent, $url) {
if (strpos($url, 'special-condition') !== false) {
$user_agent = 'CustomUserAgent';
}
return $user_agent;
}
add_filter("http_headers_useragent", "weplugins_conditional_http_headers_useragent", 10, 2);
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