Recently, I needed to check for the existence of several related shortcodes within WordPress. Rather than writing a large if-or statement I came up with this small function that takes in an array of strings and a boolean to determine whether I needed to check for the existence of all the supplied shortcodes or just any of them.
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| <?php | |
| /** | |
| * Loop through an array of shortcodes and check for their existence | |
| * @author Gabe Shackle <gabe@hereswhatidid.com> | |
| * @param array $shortcodes An array of shortcode strings | |
| * @param boolean $match_all Whether to check for the existence of ALL the shortcodes, or just ANY of them | |
| * @return mixed The results will either be an array of the found shortcodes or boolean false | |
| */ | |
| function shortcodes_exist( $shortcodes = array(), $match_all = false ) { | |
| $found_shortcodes = array(); | |
| foreach( $shortcodes as $shortcode ) { | |
| if ( shortcode_exists( $shortcode ) ) { | |
| $found_shortcodes[] = $shortcode; | |
| } else { | |
| if ( $match_all ) { | |
| return false; | |
| } | |
| } | |
| } | |
| if ( count( $found_shortcodes ) === 0 ) { | |
| return false; | |
| } else { | |
| return $found_shortcodes; | |
| } | |
| } | |
| $shortcodes_to_find = array( | |
| 'gallery', | |
| 'audio', | |
| 'thiswontwork' | |
| ); | |
| $find_any = shortcodes_exist( $shortcodes_to_find ); | |
| // returns array( 'gallery', 'audio' ); | |
| $find_all = shortcodes_exist( $shortcodes_to_find, true ); | |
| // returns false |