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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 |
---|---|
376 | $value = ''; |
377 | break; |
378 | } |
379 |
|
380 | if ( 'raw' == $context ) |
381 | return $value; |
382 |
|
383 | if ( 'edit' == $context ) { |
384 | /** This filter is documented in wp-includes/post.php */ |
385 | $value = apply_filters( "edit_$field", $value, $bookmark_id ); |
386 |
|
387 | if ( 'link_notes' == $field ) { |
388 | $value = esc_html( $value ); // textarea_escaped |
389 | } else { |
390 | $value = esc_attr($value); |
391 | } |
392 | } elseif ( 'db' == $context ) { |
393 | /** This filter is documented in wp-includes/post.php */ |
394 | $value = apply_filters( "pre_$field", $value ); |