Is it possible to make shortcodes NOT case sensitive?

2 comments

1. Here is another simple idea for a case-insensitive shortcode:

   /**
    * Make a shortcode case insensitive via the the_content filter
    *
    * @param string $content
    * @return string $content
    */
   function my_case_insensitive_shortcode( $content )
   {
       $sc   = 'test'; // Edit this shortcode name to your needs
   
       $from = '['. $sc ; 
       $to   = $from;
   
       if( stristr( $content, $from ) )    
           $content = str_ireplace( $from, $to, $content );
   
       return $content;
   
   }
   
   add_filter( 'the_content', 'my_case_insensitive_shortcode', 10 );
   

   You could also use preg_replace(), if you need more accurate replacements.

   Example:

   Writing this in the post editor

   [test id="1"]
   
   [tEsT id="2"]
   
   [TeSt id="3"]
   

   gives the following output before the do_shortcode filter is activated with priority 11:

   [test id="1"]
   
   [test id="2"]
   
   [test id="3"]
   

2. If you’re talking about a shortcode you’ve created yourself, you’d have to register all possibilities of case.

   If you want all shortcodes to be case-insensitive, you’d have to modify the shortcode handling code in the WordPress core includes (or override it I guess…)

   This question Are shortcodes case-sensitive? has some info on the necessary functions you’d have to modify.

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