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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 |
|---|---|
| 1592 | // Back compat filters |
| 1593 | if ( 'slug' == $field ) |
| 1594 | $value = apply_filters('pre_category_nicename', $value); |
| 1595 | |
| 1596 | } else if ( 'rss' == $context ) { |
| 1597 | $value = apply_filters("term_{$field}_rss", $value, $taxonomy); |
| 1598 | $value = apply_filters("{$taxonomy}_{$field}_rss", $value); |
| 1599 | } else { |
| 1600 | // Use display filters by default. |
| 1601 | $value = apply_filters("term_{$field}", $value, $term_id, $taxonomy, $context); |
| 1602 | $value = apply_filters("{$taxonomy}_{$field}", $value, $term_id, $context); |
| 1603 | } |
| 1604 | |
| 1605 | if ( 'attribute' == $context ) |
| 1606 | $value = esc_attr($value); |
| 1607 | else if ( 'js' == $context ) |
| 1608 | $value = esc_js($value); |
| 1609 | |
| 1610 | return $value; |