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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1643 | if ( 'edit' == $context ) { |
| 1644 | $value = apply_filters("edit_term_{$field}", $value, $term_id, $taxonomy); |
| 1645 | $value = apply_filters("edit_{$taxonomy}_{$field}", $value, $term_id); |
| 1646 | if ( 'description' == $field ) |
| 1647 | $value = esc_html($value); // textarea_escaped |
| 1648 | else |
| 1649 | $value = esc_attr($value); |
| 1650 | } else if ( 'db' == $context ) { |
| 1651 | $value = apply_filters("pre_term_{$field}", $value, $taxonomy); |
| 1652 | $value = apply_filters("pre_{$taxonomy}_{$field}", $value); |
| 1653 | // Back compat filters |
| 1654 | if ( 'slug' == $field ) |
| 1655 | $value = apply_filters('pre_category_nicename', $value); |
| 1656 | |
| 1657 | } else if ( 'rss' == $context ) { |
| 1658 | $value = apply_filters("term_{$field}_rss", $value, $taxonomy); |
| 1659 | $value = apply_filters("{$taxonomy}_{$field}_rss", $value); |
| 1660 | } else { |
| 1661 | // Use display filters by default. |