I've written a little shortcode, following basic instructions on Wordpress Codex:

function myshortcode( $atts, $content = null ) {
    extract( shortcode_atts( array(
    ), $atts ) );
    return some_html _code_here . $content;

When I put


in a post, I obtain the following output:

this <br />
is <br />
a <br />
test <br />
content <br />

How can I avoid the inserting of br / tags?

  • That's normal, the text would all be on one line otherwise when displayed(which is not how you've formatted it in the editor - ie. each word is on a new line). If you don't want newlines, don't create them in the editor. – t31os Aug 10 '13 at 9:35
  • Anyway this can be a problem, as described in betterwp.net/17-protect-shortcodes-from-wpautop-and-the-likes – Toc Aug 11 '13 at 3:46

The <br /> tags are being added to the content by the wpautop() function. If you run your shortcode before it runs they will not be there. It is added in \wp-includes\default-filters.php with the default priority of 10.

add_filter( 'the_content', 'myshortcode', 1 );

function myshortcode( $atts, $content = null ) {
    return $content;

wpautop() can also add other markup besides <br /> tags.

  • I obtain a Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'myshortcode' not found or invalid function name message. – Toc Aug 9 '13 at 20:15
  • The second argument in add_filter() has to match the name of your shortcode function exactly. Copy the function name you used and paste it over the myshortcode in that line. – Charles Clarkson Aug 10 '13 at 2:23
  • I have to use do_shortcode in place of myshortcode (which is the exact name of the handler function). Thanks anyway. – Toc Aug 10 '13 at 3:54
function myshortcode( $atts, $content = null ) {
  return strip_tags($content,'br');

But I am unclear why you are you adding newlines in the first place if you don't want them.


You could try this one:

add_shortcode( 'myshortcode', 'myshortcode_callback' );

function myshortcode_callback( $atts, $content = null ) {
    return str_replace( '<br />', '', $content );

by simply removing the <br /> tags from the output. If you want to strip all HTML tags, you can use strip_tags() instead.

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