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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 |
|---|---|
| 3903 | |
| 3904 | if ( current_user_can( 'delete_post', $attachment->ID ) ) { |
| 3905 | $response['nonces']['delete'] = wp_create_nonce( 'delete-post_' . $attachment->ID ); |
| 3906 | } |
| 3907 | |
| 3908 | if ( $meta && ( 'image' === $type || ! empty( $meta['sizes'] ) ) ) { |
| 3909 | $sizes = array(); |
| 3910 | |
| 3911 | /** This filter is documented in wp-admin/includes/media.php */ |
| 3912 | $possible_sizes = apply_filters( |
| 3913 | 'image_size_names_choose', |
| 3914 | array( |
| 3915 | 'thumbnail' => __( 'Thumbnail' ), |
| 3916 | 'medium' => __( 'Medium' ), |
| 3917 | 'large' => __( 'Large' ), |
| 3918 | 'full' => __( 'Full Size' ), |
| 3919 | ) |
| 3920 | ); |
| 3921 | unset( $possible_sizes['full'] ); |