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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 |
|---|---|
| 843 | if ( 'slug' == $field ) |
| 844 | $value = apply_filters('pre_category_nicename', $value); |
| 845 | |
| 846 | } else if ( 'rss' == $context ) { |
| 847 | $value = apply_filters("term_${field}_rss", $value, $taxonomy); |
| 848 | $value = apply_filters("${taxonomy}_${field}_rss", $value); |
| 849 | } else { |
| 850 | // Use display filters by default. |
| 851 | $value = apply_filters("term_$field", $value, $term_id, $taxonomy, $context); |
| 852 | $value = apply_filters("${taxonomy}_$field", $value, $term_id, $context); |
| 853 | } |
| 854 | |
| 855 | if ( 'attribute' == $context ) |
| 856 | $value = attribute_escape($value); |
| 857 | else if ( 'js' == $context ) |
| 858 | $value = js_escape($value); |
| 859 | |
| 860 | return $value; |
| 861 | } |