Created
April 28, 2018 12:28
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Example of Use cases for Filters
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<?php | |
/** | |
* code #1 - update the post excerpt character length | |
* @param integer | |
* @return integer | |
*/ | |
function my_excerpt_length($length) | |
{ | |
return 65; | |
} | |
add_filter('excerpt_length', 'my_excerpt_length'); | |
/** | |
* code #2 - replace 'Read more' text with new string same URL | |
* @param string | |
* @return string | |
*/ | |
function new_excerpt_more($text) | |
{ | |
return ' [...]'; | |
} | |
add_filter('excerpt_more', 'new_excerpt_more'); | |
/** | |
* code #3 - remove automatic <p> tags in Wordpress editor | |
*/ | |
remove_filter('the_content', 'wpautop'); | |
/** | |
* code #4 - append 'first' class onto the 1st <p> element in each post | |
* @param string | |
* @return string | |
*/ | |
function first_paragraph($content){ | |
global $post; | |
if ($post->post_type == "post") { | |
return preg_replace('/<p([^>]+)?>/', '<p$1 class="first">', $content, 1); | |
} | |
else { | |
return $content; | |
} | |
} | |
add_filter('the_content', 'first_paragraph'); | |
/** | |
* code #5 - add & remove custom Wordpress social contacts from user profile | |
* @param array | |
* @return array | |
*/ | |
function cusom_social_contact_links($contacts) { | |
// Adding | |
$contacts['twitter'] = 'Twitter'; | |
$contacts['youtube'] = 'YouTube'; | |
$contacts['dribbble'] = 'Dribbble'; | |
// Removing | |
unset($contacts['yim']); | |
unset($contacts['aim']); | |
unset($contacts['jabber']); | |
return $contacts; | |
} | |
add_filter('user_contactmethods','cusom_social_contact_links', 10, 1); | |
/** | |
* code #6 - Remove the URL Field from the WordPress Comment Form | |
* @param array | |
* @return array | |
*/ | |
function remove_comment_fields($fields) { | |
unset($fields['url']); | |
return $fields; | |
} | |
add_filter('comment_form_default_fields','remove_comment_fields'); |
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