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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 4 times in this file.
Line | Code |
---|---|
771 |
|
772 | /** |
773 | * Fires after the header image is set or an error is returned. |
774 | * |
775 | * @since 2.1.0 |
776 | * |
777 | * @param string $file Path to the file. |
778 | * @param int $attachment_id Attachment ID. |
779 | */ |
780 | do_action( 'wp_create_file_in_uploads', $file, $attachment_id ); // For replication |
781 |
|
782 | return $this->finished(); |
783 | } elseif ( $width > $max_width ) { |
784 | $oitar = $width / $max_width; |
785 | $image = wp_crop_image($attachment_id, 0, 0, $width, $height, $max_width, $height / $oitar, false, str_replace(basename($file), 'midsize-'.basename($file), $file)); |
786 | if ( ! $image || is_wp_error( $image ) ) |
787 | wp_die( __( 'Image could not be processed. Please go back and try again.' ), __( 'Image Processing Error' ) ); |
788 |
|
789 | /** This filter is documented in wp-admin/custom-header.php */ |
790 | $image = apply_filters( 'wp_create_file_in_uploads', $image, $attachment_id ); // For replication |
791 |
|
792 | $url = str_replace(basename($url), basename($image), $url); |
793 | $width = $width / $oitar; |
794 | $height = $height / $oitar; |
795 | } else { |
796 | $oitar = 1; |
797 | } |
798 | ?> |
799 |
|
Line | Code |
917 | elseif ( ! empty( $_POST['create-new-attachment'] ) ) |
918 | $cropped = _copy_image_file( $attachment_id ); |
919 | else |
920 | $cropped = get_attached_file( $attachment_id ); |
921 |
|
922 | if ( ! $cropped || is_wp_error( $cropped ) ) |
923 | wp_die( __( 'Image could not be processed. Please go back and try again.' ), __( 'Image Processing Error' ) ); |
924 |
|
925 | /** This filter is documented in wp-admin/custom-header.php */ |
926 | $cropped = apply_filters( 'wp_create_file_in_uploads', $cropped, $attachment_id ); // For replication |
927 |
|
928 | $object = $this->create_attachment_object( $cropped, $attachment_id ); |
929 |
|
930 | if ( ! empty( $_POST['create-new-attachment'] ) ) |
931 | unset( $object['ID'] ); |
932 |
|
933 | // Update the attachment |
934 | $attachment_id = $this->insert_attachment( $object, $cropped ); |
935 |
|
Line | Code |
1235 | (int) $dimensions['dst_width'], |
1236 | (int) $dimensions['dst_height'] |
1237 | ); |
1238 |
|
1239 | if ( ! $cropped || is_wp_error( $cropped ) ) { |
1240 | wp_send_json_error( array( 'message' => __( 'Image could not be processed. Please go back and try again.' ) ) ); |
1241 | } |
1242 |
|
1243 | /** This filter is documented in wp-admin/custom-header.php */ |
1244 | $cropped = apply_filters( 'wp_create_file_in_uploads', $cropped, $attachment_id ); // For replication |
1245 |
|
1246 | $object = $this->create_attachment_object( $cropped, $attachment_id ); |
1247 |
|
1248 | unset( $object['ID'] ); |
1249 |
|
1250 | $new_attachment_id = $this->insert_attachment( $object, $cropped ); |
1251 |
|
1252 | $object['attachment_id'] = $new_attachment_id; |
1253 | $object['url'] = wp_get_attachment_url( $new_attachment_id );; |