← All changes | lib/schema-graph.php +226 -0 22.5.2 → 22.7.0 View file →

		@@ -1,0 +1,226 @@
	1	+<?php
	2	+/*
	3	+ * License: GPLv3
	4	+ * License URI: https://www.gnu.org/licenses/gpl.txt
	5	+ * Copyright 2012-2026 Jean-Sebastien Morisset (https://wpsso.com/)
	6	+ */
	7	+
	8	+if ( ! defined( 'ABSPATH' ) ) {
	9	+
	10	+ die( 'These aren\'t the droids you\'re looking for.' );
	11	+}
	12	+
	13	+if ( ! defined( 'WPSSO_PLUGINDIR' ) ) {
	14	+
	15	+ die( 'Do. Or do not. There is no try.' );
	16	+}
	17	+
	18	+if ( ! class_exists( 'WpssoSchemaGraph' ) ) {
	19	+
	20	+ class WpssoSchemaGraph {
	21	+
	22	+ private static $graph_context = 'https://schema.org';
	23	+ private static $graph_type = 'graph';
	24	+ private static $graph_data = array();
	25	+
	26	+ public function __construct() {}
	27	+
	28	+ public static function get_type_url() {
	29	+
	30	+ return self::$graph_context . '/' . self::$graph_type;
	31	+ }
	32	+
	33	+ public static function add_data( $data ) {
	34	+
	35	+ static $home_url = null;
	36	+
	37	+ if ( null === $home_url ) { // Optimize and call just once.
	38	+
	39	+ $home_url = untrailingslashit( get_home_url() );
	40	+ }
	41	+
	42	+ if ( empty( $data[ '@id' ] ) ) {
	43	+
	44	+ self::$graph_data[] = $data;
	45	+
	46	+ return true;
	47	+
	48	+ } else {
	49	+
	50	+ $val =& $data[ '@id' ];
	51	+
	52	+ if ( 0 === strpos( $val, $home_url ) ) {
	53	+
	54	+ $val = str_replace( $home_url, '', $val ); // Shorten the @id value, if possible.
	55	+ }
	56	+
	57	+ if ( ! isset( self::$graph_data[ $val ] ) ) { // If not already added.
	58	+
	59	+ if ( count( $data ) > 1 ) { // Ignore arrays with only an @id.
	60	+
	61	+ self::$graph_data[ $val ] = $data;
	62	+
	63	+ return true;
	64	+ }
	65	+ }
	66	+ }
	67	+
	68	+ return false;
	69	+ }
	70	+
	71	+ public static function get_json_reset_data() {
	72	+
	73	+ $json_data = self::get_json();
	74	+
	75	+ self::reset_data();
	76	+
	77	+ return $json_data;
	78	+ }
	79	+
	80	+ public static function get_json() {
	81	+
	82	+ $json_data = array(
	83	+ '@context' => self::$graph_context,
	84	+ '@graph' => array_values( self::$graph_data ), // Exclude the associative array key values.
	85	+ );
	86	+
	87	+ self::clean_json( $json_data );
	88	+
	89	+ return $json_data;
	90	+ }
	91	+
	92	+ public static function reset_data() {
	93	+
	94	+ self::$graph_data = array();
	95	+ }
	96	+
	97	+ /*
	98	+ * Recursively remove null values, empty strings, and empty arrays.
	99	+ */
	100	+ public static function clean_json( array &$arr ) {
	101	+
	102	+ foreach ( $arr as $key => $value ) {
	103	+
	104	+ if ( null === $value ) { // Null value.
	105	+
	106	+ unset( $arr[ $key ] );
	107	+
	108	+ } elseif ( '' === $value ) { // Empty string.
	109	+
	110	+ unset( $arr[ $key ] );
	111	+
	112	+ } elseif ( array() === $value ) { // Empty array.
	113	+
	114	+ unset( $arr[ $key ] );
	115	+
	116	+ } elseif ( is_array( $value ) ) {
	117	+
	118	+ self::clean_json( $arr[ $key ] );
	119	+ }
	120	+ }
	121	+ }
	122	+
	123	+ public static function optimize_json( array &$json_data ) { // Pass by reference is OK.
	124	+
	125	+ static $optim_data = array();
	126	+ static $recur_level = null;
	127	+ static $id_anchor = null;
	128	+ static $home_url = null;
	129	+
	130	+ if ( isset( $json_data[ '@graph' ] ) ) { // Top level of json.
	131	+
	132	+ $recur_level = 0;
	133	+
	134	+ } elseif ( null !== $recur_level ) {
	135	+
	136	+ $recur_level++;
	137	+ }
	138	+
	139	+ if ( $recur_level > 32 ) { // Just in case.
	140	+
	141	+ return;
	142	+ }
	143	+
	144	+ if ( null === $id_anchor ) { // Optimize and call just once.
	145	+
	146	+ $id_anchor = WpssoSchema::get_id_anchor();
	147	+ }
	148	+
	149	+ if ( null === $home_url ) { // Optimize and call just once.
	150	+
	151	+ $home_url = untrailingslashit( get_home_url() );
	152	+ }
	153	+
	154	+ foreach ( $json_data as $key => &$val ) {
	155	+
	156	+ if ( is_array( $val ) ) {
	157	+
	158	+ self::optimize_json( $val );
	159	+
	160	+ } elseif ( '@id' === $key ) {
	161	+
	162	+ if ( 0 === strpos( $val, $home_url ) ) {
	163	+
	164	+ $val = str_replace( $home_url, '', $val ); // Shorten the @id value, if possible.
	165	+ }
	166	+
	167	+ if ( count( $json_data ) > 1 ) { // Ignore arrays with a single element (ie. the @id property).
	168	+
	169	+ if ( false !== strpos( $val, $id_anchor ) ) { // Only optimize our own @ids.
	170	+
	171	+ if ( empty( $optim_data[ $val ] ) ) {
	172	+
	173	+ $optim_data[ $val ] = $json_data;
	174	+
	175	+ foreach ( $optim_data[ $val ] as $new_key => &$new_val ) {
	176	+
	177	+ if ( is_array( $new_val ) ) {
	178	+
	179	+ self::optimize_json( $new_val );
	180	+ }
	181	+ }
	182	+ }
	183	+
	184	+ $json_data = array( $key => $val );
	185	+ }
	186	+ }
	187	+
	188	+ break;
	189	+ }
	190	+ }
	191	+
	192	+ if ( isset( $json_data[ '@graph' ] ) ) { // Top level of json.
	193	+
	194	+ $merged_graph = array_merge( array_values( $optim_data ), $json_data[ '@graph' ] );
	195	+
	196	+ /*
	197	+ * Reset the static variables after merging the new data.
	198	+ */
	199	+ $optim_data = array();
	200	+ $recur_level = null;
	201	+
	202	+ /*
	203	+ * Cleanup any empty @id arrays.
	204	+ */
	205	+ foreach ( $merged_graph as $num => $val ) {
	206	+
	207	+ if ( is_array( $val ) ) { // Just in case.
	208	+
	209	+ if ( ! empty( $val[ '@id' ] ) && 1 === count( $val ) ) {
	210	+
	211	+ unset( $merged_graph[ $num ] );
	212	+ }
	213	+ }
	214	+ }
	215	+
	216	+ $json_data[ '@graph' ] = $merged_graph;
	217	+
	218	+ unset( $merged_graph, $num, $val );
	219	+
	220	+ } elseif ( null !== $recur_level ) {
	221	+
	222	+ $recur_level--;
	223	+ }
	224	+ }
	225	+ }
	226	+}