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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 |
---|---|
767 |
|
768 | /** |
769 | * Fires after the header image is set or an error is returned. |
770 | * |
771 | * @since 2.1.0 |
772 | * |
773 | * @param string $file Path to the file. |
774 | * @param int $attachment_id Attachment ID. |
775 | */ |
776 | do_action( 'wp_create_file_in_uploads', $file, $attachment_id ); // For replication |
777 |
|
778 | return $this->finished(); |
779 | } elseif ( $width > $max_width ) { |
780 | $oitar = $width / $max_width; |
781 | $image = wp_crop_image($attachment_id, 0, 0, $width, $height, $max_width, $height / $oitar, false, str_replace(basename($file), 'midsize-'.basename($file), $file)); |
782 | if ( ! $image || is_wp_error( $image ) ) |
783 | wp_die( __( 'Image could not be processed. Please go back and try again.' ), __( 'Image Processing Error' ) ); |
784 |
|
785 | /** This filter is documented in wp-admin/custom-header.php */ |
786 | $image = apply_filters( 'wp_create_file_in_uploads', $image, $attachment_id ); // For replication |
787 |
|
788 | $url = str_replace(basename($url), basename($image), $url); |
789 | $width = $width / $oitar; |
790 | $height = $height / $oitar; |
791 | } else { |
792 | $oitar = 1; |
793 | } |
794 | ?> |
795 |
|
Line | Code |
913 | elseif ( ! empty( $_POST['create-new-attachment'] ) ) |
914 | $cropped = _copy_image_file( $attachment_id ); |
915 | else |
916 | $cropped = get_attached_file( $attachment_id ); |
917 |
|
918 | if ( ! $cropped || is_wp_error( $cropped ) ) |
919 | wp_die( __( 'Image could not be processed. Please go back and try again.' ), __( 'Image Processing Error' ) ); |
920 |
|
921 | /** This filter is documented in wp-admin/custom-header.php */ |
922 | $cropped = apply_filters( 'wp_create_file_in_uploads', $cropped, $attachment_id ); // For replication |
923 |
|
924 | $object = $this->create_attachment_object( $cropped, $attachment_id ); |
925 |
|
926 | if ( ! empty( $_POST['create-new-attachment'] ) ) |
927 | unset( $object['ID'] ); |
928 |
|
929 | // Update the attachment |
930 | $attachment_id = $this->insert_attachment( $object, $cropped ); |
931 |
|
Line | Code |
1243 | (int) $dimensions['dst_width'], |
1244 | (int) $dimensions['dst_height'] |
1245 | ); |
1246 |
|
1247 | if ( ! $cropped || is_wp_error( $cropped ) ) { |
1248 | wp_send_json_error( array( 'message' => __( 'Image could not be processed. Please go back and try again.' ) ) ); |
1249 | } |
1250 |
|
1251 | /** This filter is documented in wp-admin/custom-header.php */ |
1252 | $cropped = apply_filters( 'wp_create_file_in_uploads', $cropped, $attachment_id ); // For replication |
1253 |
|
1254 | $object = $this->create_attachment_object( $cropped, $attachment_id ); |
1255 |
|
1256 | $previous = $this->get_previous_crop( $object ); |
1257 |
|
1258 | if ( $previous ) { |
1259 | $object['ID'] = $previous; |
1260 | } else { |
1261 | unset( $object['ID'] ); |