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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 |
|---|---|
| 1534 | if ( 'edit' == $context ) { |
| 1535 | $value = apply_filters("edit_term_{$field}", $value, $term_id, $taxonomy); |
| 1536 | $value = apply_filters("edit_{$taxonomy}_{$field}", $value, $term_id); |
| 1537 | if ( 'description' == $field ) |
| 1538 | $value = esc_html($value); // textarea_escaped |
| 1539 | else |
| 1540 | $value = esc_attr($value); |
| 1541 | } else if ( 'db' == $context ) { |
| 1542 | $value = apply_filters("pre_term_{$field}", $value, $taxonomy); |
| 1543 | $value = apply_filters("pre_{$taxonomy}_{$field}", $value); |
| 1544 | // Back compat filters |
| 1545 | if ( 'slug' == $field ) |
| 1546 | $value = apply_filters('pre_category_nicename', $value); |
| 1547 | |
| 1548 | } else if ( 'rss' == $context ) { |
| 1549 | $value = apply_filters("term_{$field}_rss", $value, $taxonomy); |
| 1550 | $value = apply_filters("{$taxonomy}_{$field}_rss", $value); |
| 1551 | } else { |
| 1552 | // Use display filters by default. |