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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 |
|---|---|
| 4504 | |
| 4505 | if ( current_user_can( 'delete_post', $attachment->ID ) ) { |
| 4506 | $response['nonces']['delete'] = wp_create_nonce( 'delete-post_' . $attachment->ID ); |
| 4507 | } |
| 4508 | |
| 4509 | if ( $meta && ( 'image' === $type || ! empty( $meta['sizes'] ) ) ) { |
| 4510 | $sizes = array(); |
| 4511 | |
| 4512 | /** This filter is documented in wp-admin/includes/media.php */ |
| 4513 | $possible_sizes = apply_filters( |
| 4514 | 'image_size_names_choose', |
| 4515 | array( |
| 4516 | 'thumbnail' => __( 'Thumbnail' ), |
| 4517 | 'medium' => __( 'Medium' ), |
| 4518 | 'large' => __( 'Large' ), |
| 4519 | 'full' => __( 'Full Size' ), |
| 4520 | ) |
| 4521 | ); |
| 4522 | unset( $possible_sizes['full'] ); |