pre_(field)
Filters the value of a specific post field before saving.
The dynamic portion of the hook name, $field, refers to the post field name.
Usage
add_filter( 'pre_(field)', 'wp_kama_pre_field_filter' );
/**
* Function for `pre_(field)` filter-hook.
*
* @param mixed $value Value of the post field.
*
* @return mixed
*/
function wp_kama_pre_field_filter( $value ){
// filter...
return $value;
}
- $value(mixed)
- Value of the post field.
Changelog
| Since 2.3.0 | Introduced. |
Where the hook is called
pre_(field)
wp-includes/post.php 2822
$value = apply_filters( "pre_{$field}", $value );
wp-includes/bookmark.php 437
$value = apply_filters( "pre_{$field}", $value );
wp-includes/user.php 1788
$value = apply_filters( "pre_{$field}", $value );