@@ -883,7 +883,51 @@ public static function toLimitOut($array): array
883883 return $ array
884884 }
885885
886+ public const FLAT_DOT_JOIN_INDEX = 1 ;
887+ 888+ /**
889+ * @param iterable $data
890+ * @param int $flags
891+ *
892+ * @return array
893+ */
894+ public static function flattenMap (iterable $ dataint $ flags0 ): array
895+ {
896+ $ flatMap
897+ self ::doFlattenMap ($ data$ flatMap'' , $ flags
898+ return $ flatMap
899+ }
900+ 886901 /**
902+ * @param iterable $data
903+ * @param array $flatMap
904+ * @param string $parentPath
905+ * @param int $flags
906+ */
907+ public static function doFlattenMap (iterable $ dataarray &$ flatMapstring $ parentPath'' , int $ flags0 ): void
908+ {
909+ foreach ($ dataas $ key$ val
910+ if ($ parentPath
911+ if (is_int ($ key$ flagsself ::FLAT_DOT_JOIN_INDEX ) {
912+ $ path$ parentPath"[ $ key] " ;
913+ } else {
914+ $ path$ parentPath'. ' . $ key
915+ }
916+ } else {
917+ $ path$ key
918+ }
919+ 920+ if (is_scalar ($ val$ valnull ) {
921+ $ flatMap$ path$ val
922+ } else {
923+ self ::doFlattenMap ($ val$ flatMap$ path$ flags
924+ }
925+ }
926+ }
927+ 928+ /**
929+ * Quickly build multi line k-v text
930+ *
887931 * @param array $data
888932 * @param string $kvSep
889933 * @param string $lineSep
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