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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 |
|---|---|
| 1735 | if ( 'slug' == $field ) |
| 1736 | $value = apply_filters('pre_category_nicename', $value); |
| 1737 | |
| 1738 | } else if ( 'rss' == $context ) { |
| 1739 | $value = apply_filters("term_{$field}_rss", $value, $taxonomy); |
| 1740 | $value = apply_filters("{$taxonomy}_{$field}_rss", $value); |
| 1741 | } else { |
| 1742 | // Use display filters by default. |
| 1743 | $value = apply_filters("term_{$field}", $value, $term_id, $taxonomy, $context); |
| 1744 | $value = apply_filters("{$taxonomy}_{$field}", $value, $term_id, $context); |
| 1745 | } |
| 1746 | |
| 1747 | if ( 'attribute' == $context ) |
| 1748 | $value = esc_attr($value); |
| 1749 | else if ( 'js' == $context ) |
| 1750 | $value = esc_js($value); |
| 1751 | |
| 1752 | return $value; |
| 1753 | } |