php中数组的分类有哪两种

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select * from tbl_Articles WHERE ArticleID=1566826 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1566826 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1566826 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1086818,1069741,1120542,1065303,1072318,1079442,1074216,1096861,1070967,1082395,1090260,1094387,1126583,1093465,1001240,1086122,1078979,1089962,1055235,1069944,1087793,1072837,1079572,1083530,1368851,1066616,1084259,1054934,986336,1065381) ORDER BY field (ArticleID,1086818,1069741,1120542,1065303,1072318,1079442,1074216,1096861,1070967,1082395,1090260,1094387,1126583,1093465,1001240,1086122,1078979,1089962,1055235,1069944,1087793,1072837,1079572,1083530,1368851,1066616,1084259,1054934,986336,1065381)