apply_filters( ‘kses_allowed_protocols’, string[] $protocols )

User Contributed Notes

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   Mayo Moriyama 8 years ago

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   Allow Skype call links.

   add_filter( 'kses_allowed_protocols', function ( $protocols ) {
       $protocols[] = 'skype';
       return $protocols;
   } );
2. Skip to note 4 content

   hatul 10 years ago

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   The filter should to run before init.

   Note: this example only works in PHP 5.3+

   function wpse_allow_sms_protocol( $protocols ) {
       $protocols[] = 'sms';
       return $protocols;
   }
   add_action('plugins_loaded', function(){add_filter('kses_allowed_protocols', 'wpse_allow_sms_protocol' );});
   print_r(wp_allowed_protocols());