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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 |
---|---|
809 |
|
810 | /** |
811 | * Fires after the header image is set or an error is returned. |
812 | * |
813 | * @since 2.1.0 |
814 | * |
815 | * @param string $file Path to the file. |
816 | * @param int $attachment_id Attachment ID. |
817 | */ |
818 | do_action( 'wp_create_file_in_uploads', $file, $attachment_id ); // For replication |
819 |
|
820 | return $this->finished(); |
821 | } elseif ( $width > $max_width ) { |
822 | $oitar = $width / $max_width; |
823 | $image = wp_crop_image( $attachment_id, 0, 0, $width, $height, $max_width, $height / $oitar, false, str_replace( basename( $file ), 'midsize-' . basename( $file ), $file ) ); |
824 | if ( ! $image || is_wp_error( $image ) ) { |
825 | wp_die( __( 'Image could not be processed. Please go back and try again.' ), __( 'Image Processing Error' ) ); |
826 | } |
827 |
|
828 | /** This filter is documented in wp-admin/custom-header.php */ |
829 | $image = apply_filters( 'wp_create_file_in_uploads', $image, $attachment_id ); // For replication |
830 |
|
831 | $url = str_replace( basename( $url ), basename( $image ), $url ); |
832 | $width = $width / $oitar; |
833 | $height = $height / $oitar; |
834 | } else { |
835 | $oitar = 1; |
836 | } |
837 | ?> |
838 |
|
Line | Code |
963 | } else { |
964 | $cropped = get_attached_file( $attachment_id ); |
965 | } |
966 |
|
967 | if ( ! $cropped || is_wp_error( $cropped ) ) { |
968 | wp_die( __( 'Image could not be processed. Please go back and try again.' ), __( 'Image Processing Error' ) ); |
969 | } |
970 |
|
971 | /** This filter is documented in wp-admin/custom-header.php */ |
972 | $cropped = apply_filters( 'wp_create_file_in_uploads', $cropped, $attachment_id ); // For replication |
973 |
|
974 | $object = $this->create_attachment_object( $cropped, $attachment_id ); |
975 |
|
976 | if ( ! empty( $_POST['create-new-attachment'] ) ) { |
977 | unset( $object['ID'] ); |
978 | } |
979 |
|
980 | // Update the attachment |
981 | $attachment_id = $this->insert_attachment( $object, $cropped ); |
Line | Code |
1299 | (int) $dimensions['dst_width'], |
1300 | (int) $dimensions['dst_height'] |
1301 | ); |
1302 |
|
1303 | if ( ! $cropped || is_wp_error( $cropped ) ) { |
1304 | wp_send_json_error( array( 'message' => __( 'Image could not be processed. Please go back and try again.' ) ) ); |
1305 | } |
1306 |
|
1307 | /** This filter is documented in wp-admin/custom-header.php */ |
1308 | $cropped = apply_filters( 'wp_create_file_in_uploads', $cropped, $attachment_id ); // For replication |
1309 |
|
1310 | $object = $this->create_attachment_object( $cropped, $attachment_id ); |
1311 |
|
1312 | $previous = $this->get_previous_crop( $object ); |
1313 |
|
1314 | if ( $previous ) { |
1315 | $object['ID'] = $previous; |
1316 | } else { |
1317 | unset( $object['ID'] ); |