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PHP

Disable XML-RPC

Turns off the XML-RPC interface (xmlrpc.php), a common target for brute-force and pingback abuse. Use it when no app or service needs XML-RPC.

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Code

add_filter( 'xmlrpc_enabled', '__return_false' );

add_filter( 'xmlrpc_methods', function () {
    return array();
}, 999 );

add_filter( 'wp_headers', function ( $headers ) {
    unset( $headers['X-Pingback'] );

    return $headers;
} );

remove_action( 'wp_head', 'rsd_link' );

Notes

The WordPress mobile apps and some services (for example Jetpack) rely on XML-RPC.

How to add this snippet

  1. Install WPIDE on your WordPress site (it is free) and open Code Snippets.
  2. Use snippet above adds it from the library in one click. Or copy the code into a new snippet with the same code type.
  3. It is added inactive: review the code and settings, then switch it on.

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