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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 1004 | 'html' => image_align_input_fields($post, get_option('image_default_align')), |
| 1005 | ); |
| 1006 | |
| 1007 | $form_fields['image-size'] = image_size_input_fields( $post, get_option('image_default_size', 'medium') ); |
| 1008 | |
| 1009 | } else { |
| 1010 | unset( $form_fields['image_alt'] ); |
| 1011 | } |
| 1012 | |
| 1013 | $form_fields = apply_filters('attachment_fields_to_edit', $form_fields, $post); |
| 1014 | |
| 1015 | return $form_fields; |
| 1016 | } |
| 1017 | |
| 1018 | /** |
| 1019 | * Retrieve HTML for media items of post gallery. |
| 1020 | * |
| 1021 | * The HTML markup retrieved will be created for the progress of SWF Upload |
| 1022 | * component. Will also create link for showing and hiding the form to modify |
| Line | Code |
| 1319 | |
| 1320 | $form_fields[$taxonomy] = $t; |
| 1321 | } |
| 1322 | } |
| 1323 | |
| 1324 | // Merge default fields with their errors, so any key passed with the error (e.g. 'error', 'helps', 'value') will replace the default |
| 1325 | // The recursive merge is easily traversed with array casting: foreach( (array) $things as $thing ) |
| 1326 | $form_fields = array_merge_recursive($form_fields, (array) $args['errors'] ); |
| 1327 | |
| 1328 | $form_fields = apply_filters( 'attachment_fields_to_edit', $form_fields, $post ); |
| 1329 | |
| 1330 | unset( $form_fields['image-size'], $form_fields['align'], $form_fields['image_alt'], |
| 1331 | $form_fields['post_title'], $form_fields['post_excerpt'], $form_fields['post_content'], |
| 1332 | $form_fields['url'], $form_fields['menu_order'], $form_fields['image_url'] ); |
| 1333 | |
| 1334 | $media_meta = apply_filters( 'media_meta', '', $post ); |
| 1335 | |
| 1336 | $defaults = array( |
| 1337 | 'input' => 'text', |