do_shortcode() – Function | Developer.WordPress.org

Searches content for shortcodes and filter shortcodes through their hooks.

Description

If there are no shortcode tags defined, then the content will be returned without any filtering. This might cause issues when plugins are disabled but the shortcode will still show up in the post or content.

Parameters

$contentstringrequired: Content to search for shortcodes.
$ignore_htmlbooloptional: When true, shortcodes inside HTML elements will be skipped.

Default:false

Return

string Content with shortcodes filtered out.

More Information

If there are no shortcode tags defined, then the content will be returned without any filtering. This might cause issues if a plugin is disabled as its shortcode will still show up in the post or content.

Source

function do_shortcode( $content, $ignore_html = false ) {
	global $shortcode_tags;

	if ( ! str_contains( $content, '[' ) ) {
		return $content;
	}

	if ( empty( $shortcode_tags ) || ! is_array( $shortcode_tags ) ) {
		return $content;
	}

	// Find all registered tag names in $content.
	preg_match_all( '@\[([^<>&/\[\]\x00-\x20=]++)@', $content, $matches );
	$tagnames = array_intersect( array_keys( $shortcode_tags ), $matches[1] );

	if ( empty( $tagnames ) ) {
		return $content;
	}

	// Ensure this context is only added once if shortcodes are nested.
	$has_filter   = has_filter( 'wp_get_attachment_image_context', '_filter_do_shortcode_context' );
	$filter_added = false;

	if ( ! $has_filter ) {
		$filter_added = add_filter( 'wp_get_attachment_image_context', '_filter_do_shortcode_context' );
	}

	$content = do_shortcodes_in_html_tags( $content, $ignore_html, $tagnames );

	$pattern = get_shortcode_regex( $tagnames );
	$content = preg_replace_callback( "/$pattern/", 'do_shortcode_tag', $content );

	// Always restore square braces so we don't break things like <!--[if IE ]>.
	$content = unescape_invalid_shortcodes( $content );

	// Only remove the filter if it was added in this scope.
	if ( $filter_added ) {
		remove_filter( 'wp_get_attachment_image_context', '_filter_do_shortcode_context' );
	}

	return $content;
}

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Changelog

Version	Description
2.5.0	Introduced.

User Contributed Notes

Codex 10 years ago

// Use shortcode in a PHP file (outside the post editor).
echo do_shortcode( '' );

// In case there is opening and closing shortcode.
echo do_shortcode( '[iscorrect]' . $text_to_be_wrapped_in_shortcode . '[/iscorrect]' );

// Enable the use of shortcodes in text widgets.
add_filter( 'widget_text', 'do_shortcode' );

// Use shortcodes in form like Landing Page Template.
echo do_shortcode( '[contact-form-7 id="91" title="quote"]' );

// Store the short code in a variable.
$var = do_shortcode( '' );
echo $var;

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pansotdev 8 years ago

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The most common use of the shortcode is the following
```
<?php echo do_shortcode('[name_of_shortcode]'); ?>
```
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Ken Dirschl 9 years ago

You must log in to vote on the helpfulness of this noteVote results for this note: 22You must log in to vote on the helpfulness of this note

Square brackets are required to echo the shortcode, not just the name of the shortcode.

echo do_shortcode( ' [my_shortcode] ' );

This is not clear in the example.

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Ismail 9 years ago

Example

// Making your custom string parses shortcode
$string = do_shortcode( $string );
// If your string has a custom filter, add its tag name in an applicable add_filter function
add_filter( 'my_string_filter_hook_tag_name', 'do_shortcode' );

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Brad Dalton 8 years ago

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Hook shortcode in single posts
```
add_action( 'loop_start', 'shortcode_before_entry' );

function shortcode_before_entry() {

    if ( ! is_singular( 'post' )  ) {
		return;
	}

    echo do_shortcode('[your_shortcode_handle]');
	
}
```
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damianc 7 years ago

To only allow specific shortcodes in comments:

add_filter('get_comment_text', function ($comment) {
    $finalComment = '';
    $allowed = ['snippet', 'quote'];
    $parts = preg_split('/(\[\/?\w+\])/', $comment, null, PREG_SPLIT_DELIM_CAPTURE);

    for ($i = 0; $i < sizeof($parts); $i++) {
        if (preg_match('/\[\w+\]/', $parts[$i])) {
            $shortcodeName = substr($parts[$i], 1, -1);
            if (in_array($shortcodeName, $allowed)) {
                $finalComment .= do_shortcode($parts[$i] . $parts[$i+1] . $parts[$i+2]);
                echo '++' . $parts[$i] . $parts[$i+1] . $parts[$i+2] . '++' . $i;
                $i += 2;
            } else {
               $finalComment .= $parts[$i];  
            }
        } else {
            $finalComment .= $parts[$i];
        }
    }
    return $finalComment;
});

Tuts Insider 3 years ago

An easy approach to defining and using shortcode.

function wpdocs_custom_shortcode ( $content = null ) {
	
	/*------Declare Variables------*/
	$part_1 = $part_2 = $part_3 = $part_4 = $part_5 = '';

	/*------Starting Portion------*/
	$part_1 .= '<div class="content-wrapper">';
	$part_2 .= '<h3 class="content-heading">Here is a heading</h3>';
	$part_3 .= '<div class="content-output">';

	/*------Ending Portion------*/
	$part_4 .= '</div>';
	$part_5 .= '</div>';
	
	/*------Return------*/
	return $part_1 . $part_2 . $part_3 . do_shortcode( $content ) . $part_4 . $part_5; 
}
/*------Register Shortcode------*/
add_shortcode( 'shortcode_name', 'wpdocs_custom_shortcode' );

Now you can use [shortcode_name]........ your content ........ [/shortcode_name] in your post editor.

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Alvaro Torres 2 years ago

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Sometimes could be really useful to have a shortcode inside another:
```
function wpdocs_concat_shortcodes() {
    $output = 'My new shortcode';

    // Add the old shortcode to the new one
    return do_shortcode( '[wpdocs_box]' ) . $output;
    
}
add_shortcode( 'wpdocs_both_shortcodes', 'wpdocs_concat_shortcodes' );
```
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damianc 7 years ago

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To allow shortcodes in comments:
```
function shortcodify($comment) {
  return do_shortcode($comment);
}

add_filter('comment_text', shortcodify);
add_filter('get_comment_text', shortcodify);
```
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do_shortcode( string $content, bool $ignore_html = false ): string

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