WordPress Cross Reference

Functions that are not part of a class:

Add hook for shortcode tag.

There can only be one hook for each shortcode. Which means that if another
plugin has a similar shortcode, it will override yours or yours will override
theirs depending on which order the plugins are included and/or ran.

Simplest example of a shortcode tag using the API:

<code>
// [footag foo="bar"]
function footag_func($atts) {
return "foo = {$atts[foo]}";
}
add_shortcode('footag', 'footag_func');
</code>

Example with nice attribute defaults:

<code>
// [bartag foo="bar"]
function bartag_func($atts) {
extract(shortcode_atts(array(
'foo' => 'no foo',
'baz' => 'default baz',
), $atts));

return "foo = {$foo}";
}
add_shortcode('bartag', 'bartag_func');
</code>

Example with enclosed content:

<code>
// [baztag]content[/baztag]
function baztag_func($atts, $content='') {
return "content = $content";
}
add_shortcode('baztag', 'baztag_func');
</code>

param: string $tag Shortcode tag to be searched in post content.
param: callable $func Hook to run when shortcode is found.

remove_shortcode($tag) X-Ref

Removes hook for shortcode.

param: string $tag shortcode tag to remove hook for.

remove_all_shortcodes() X-Ref

Clear all shortcodes.

This function is simple, it clears all of the shortcode tags by replacing the
shortcodes global by a empty array. This is actually a very efficient method
for removing all shortcodes.

shortcode_exists( $tag ) X-Ref

Whether a registered shortcode exists named $tag

param: string $tag
return: boolean

has_shortcode( $content, $tag ) X-Ref

Whether the passed content contains the specified shortcode

param: string $tag
return: boolean

do_shortcode($content) X-Ref

Search content for shortcodes and filter shortcodes through their hooks.

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.

param: string $content Content to search for shortcodes
return: string Content with shortcodes filtered out.

get_shortcode_regex() X-Ref

Retrieve the shortcode regular expression for searching.

The regular expression combines the shortcode tags in the regular expression
in a regex class.

The regular expression contains 6 different sub matches to help with parsing.

1 - An extra [ to allow for escaping shortcodes with double [[]]
2 - The shortcode name
3 - The shortcode argument list
4 - The self closing /
5 - The content of a shortcode when it wraps some content.
6 - An extra ] to allow for escaping shortcodes with double [[]]

return: string The shortcode search regular expression

do_shortcode_tag( $m ) X-Ref

Regular Expression callable for do_shortcode() for calling shortcode hook.

param: array $m Regular expression match array
return: mixed False on failure.

shortcode_parse_atts($text) X-Ref

Retrieve all attributes from the shortcodes tag.

The attributes list has the attribute name as the key and the value of the
attribute as the value in the key/value pair. This allows for easier
retrieval of the attributes, since all attributes have to be known.

param: string $text
return: array List of attributes and their value.

shortcode_atts( $pairs, $atts, $shortcode = '' ) X-Ref

Combine user attributes with known attributes and fill in defaults when needed.

The pairs should be considered to be all of the attributes which are
supported by the caller and given as a list. The returned attributes will
only contain the attributes in the $pairs list.

If the $atts list has unsupported attributes, then they will be ignored and
removed from the final returned list.

param: array $pairs Entire list of supported attributes and their defaults.
param: array $atts User defined attributes in shortcode tag.
param: string $shortcode Optional. The name of the shortcode, provided for context to enable filtering
return: array Combined and filtered attribute list.

strip_shortcodes( $content ) X-Ref

Remove all shortcode tags from the given content.

param: string $content Content to remove shortcode tags.
return: string Content without shortcode tags.

strip_shortcode_tag( $m ) X-Ref

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/wp-includes/ -> shortcodes.php (summary)

Defines 12 functions