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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 |
---|---|
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. |
1553 | $value = apply_filters("term_{$field}", $value, $term_id, $taxonomy, $context); |
1554 | $value = apply_filters("{$taxonomy}_{$field}", $value, $term_id, $context); |
1555 | } |