No, by the time your shortcode runs, the header has already been sent over the network, even the post title. It is too late to change things already sent, aka everything before it reached the_content. There is 1 way to “do it” sort of, but it carries a very, very high cost, and won’t be … Read more
You have a typo in your code (enwhile instead of endwhile) so PHP is complaining because of non-closed while loop. Correct it and everything should be ok.
add_shortcode( ‘hidetext’, ‘my_hidetext_shortcode’ ); function my_hidetext_shortcode( $atts, $content=”” ) { if( is_single() ) return $content; else return; } Docs: add_shortcode(), is_single() Solution is untested.
The reason echo do_shortcode(“[/expand]”); is not working is because [/expand] is not a valid shortcode on it’s own. The combination of [expand] and [/expand] is valid so echo do_shortcode(“[expand] some content [/expand]”); should work as intended. If you want to use this way of seting things up <?php echo do_shortcode(“[expand]”); ?> content <?php echo do_shortcode(“[/expand]”); … Read more
If it really is just for one page you could use a conditional on the_ID(); from within your shortcode class (it is a custom shortcode right?) $class = the_ID() == 213 ? “some-other-class” : “”; $myhtml = sprintf(“<div class=”some-class %1$s”>%2$s</div>”, $class, $content); The other option is to add parameters or “attributes” to your shortcode as … Read more
You could grep the 4.6.1 core codebase for all instances of “add_shortcode”. Alternatively, there is an extension for Debug Bar that will show you all shortcodes: https://wordpress.org/plugins/debug-bar-shortcodes/
Sure, you’re looking for the shortcode API. That would enable you to write a short piece of code that does exactly what you want. As easy as this in your functions.php: function wpse246274_wiki( $atts ) { $link = “http://en.wikipedia.org/wiki/” . $atts[‘link’]; return $link; } add_shortcode( ‘wikilink’, ‘wpse246274_wiki’ ); Which you would use like this in … Read more
Shortcodes should never echo; they should always return the text to be displayed. See the User Contributed Notes in the add_shortcode() docs. Your code should read more like this: function displayTable() { $string = ”; $string .= ‘<table>’; $string .= ‘<tbody>’; $fields = get_field_objects(); foreach($fields as $field) { $string .= ‘<td>’; $string .= ‘<td>’. $field[‘label’] … Read more
The problem is: the_post_thumbnail() outputs its content immediately. It’s basically like echoing instead of returning. To fix it, you should be able to just replace the_post_thumbnail(‘thumbnail’, [‘class’ => ‘droplet-img’, ‘title’ => get_the_title()]) with get_the_post_thumbnail(‘thumbnail’, [‘class’ => ‘droplet-img’, ‘title’ => get_the_title()])
You are return two times! The first return exit the function, so your shortcode outputs always “Hello World”. Correct code: function hello( $atts ) { extract( shortcode_atts( array( ‘foo’ => ‘something’, ‘bar’ => ‘something else’, ), $atts ) ); print_r($atts); // Remove, when you are fine with your atts! return ‘Hello, World: ‘.$atts[‘foo’]; } add_shortcode(‘hw’, … Read more