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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 |
---|---|
1003 | // Back compat filters |
1004 | if ( 'slug' == $field ) |
1005 | $value = apply_filters('pre_category_nicename', $value); |
1006 |
|
1007 | } else if ( 'rss' == $context ) { |
1008 | $value = apply_filters("term_${field}_rss", $value, $taxonomy); |
1009 | $value = apply_filters("${taxonomy}_${field}_rss", $value); |
1010 | } else { |
1011 | // Use display filters by default. |
1012 | $value = apply_filters("term_$field", $value, $term_id, $taxonomy, $context); |
1013 | $value = apply_filters("${taxonomy}_$field", $value, $term_id, $context); |
1014 | } |
1015 |
|
1016 | if ( 'attribute' == $context ) |
1017 | $value = esc_attr($value); |
1018 | else if ( 'js' == $context ) |
1019 | $value = esc_js($value); |
1020 |
|
1021 | return $value; |