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Quick demo of how to use did_filter hook in WordPress
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<?php | |
/* | |
Plugin Name: Did filter Check | |
Plugin URI: https://gist.github.com/laxmariappan/d49b5930875d1d8f134173742f37774d | |
Description: Check how did filter works | |
Version: 1.0 | |
*/ | |
add_filter('lax_plugin','plugin_title_change'); | |
/** | |
* Prepend category name the post title | |
* | |
* @param string $post_title | |
* @param integer $post_id | |
* @return string $post_title | |
* @since 6.1 | |
* @author Lax Mariappan <lax@webdevstudios.com> | |
*/ | |
function plugin_title_change(string $post_title, int $post_id) | |
{ | |
if( 'post' === get_post_type( $post_id ) ){ | |
$cat = get_the_category(); | |
$category = $cat[0]->cat_name; | |
return "($category) ".$post_title; | |
} | |
return $post_title; | |
} | |
add_filter('the_title', 'theme_title_change', 20, 2); | |
/** | |
* Check if lax_plugin filter has ran and Prepend category name the post title. | |
* | |
* @param string $post_title | |
* @param integer $post_id | |
* @return string $post_title | |
* @since 6.1 | |
* @author Lax Mariappan <lax@webdevstudios.com> | |
*/ | |
function theme_title_change(string $post_title, int $post_id) | |
{ | |
if( 'post' !== get_post_type( $post_id ) ){ | |
return $post_title; | |
} | |
if( did_filter( 'lax_plugin' ) ){ | |
return $post_title; | |
} | |
$cat = get_the_category(); | |
$category = $cat[0]->cat_name; | |
return "($category) ".$post_title; | |
} |
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