Get the requested schema information

说明

array cubrid_schema ( resource $conn_identifier , int $schema_type [, string $class_name [, string $attr_name ]] )

The cubrid_schema() function is used to get the requested schema information from database. You have to designate class_name, if you want to get information on certain class, attr_name, if you want to get information on certain attribute (can be used only with CUBRID_ SCH_ATTR_PRIVILEGE).

The result of the cubrid_schema function is returned as a two-dimensional array (column (associative array) * row (numeric array)). The following tables shows types of schema and the column structure of the result array to be returned based on the schema type.

**Result Composition of Each Type**
Schema	Column Number	Column Name	Value
CUBRID_SCH_CLASS	1	NAME
	2	TYPE	0:system class 1:vclass 2:class
CUBRID_SCH_VCLASS	1	NAME
	2	TYPE	1:vclass
CUBRID_SCH_QUERY_SPEC	1	QUERY_SPEC
CUBRID_SCH_ATTRIBUTE / CUBRID_SCH_CLASS_ATTRIBUTE	1	ATTR_NAME
	2	DOMAIN
	3	SCALE
	4	PRECISION
	5	INDEXED	1:indexed
	6	NOT NULL	1:not null
	7	SHARED	1:shared
	8	UNIQUE	1:unique
	9	DEFAULT
	10	ATTR_ORDER	base:1
	11	CLASS_NAME
	12	SOURCE_CLASS
	13	IS_KEY	1:key
CUBRID_SCH_METHOD / CUBRID_SCH_CLASS_METHOD	1	NAME
	2	RET_DOMAIN
	3	ARG_DOMAIN
CUBRID_SCH_METHOD_FILE	1	METHOD_FILE
CUBRID_SCH_SUPERCLASS / CUBRID_SCH_DIRECT_SUPER_CLASS / CUBRID_SCH_SUBCLASS	1	CLASS_NAME
	2	TYPE	0:system class 1:vclass 2:class
CUBRID_SCH_CONSTRAINT	1	TYPE	0:unique 1:index 2:reverse unique 3:reverse index
	2	NAME
	3	ATTR_NAME
	4	NUM_PAGES
	5	NUM_KEYS
	6	PRIMARY_KEY	1:primary key
	7	KEY_ORDER	base:1
CUBRID_SCH_TRIGGER	1	NAME
	2	STATUS
	3	EVENT
	4	TARGET_CLASS
	5	TARGET_ATTR
	6	ACTION_TIME
	7	ACTION
	8	PRIORITY
	9	CONDITION_TIME
	10	CONDITION
CUBRID_SCH_CLASS_PRIVILEGE / CUBRID_SCH_ATTR_PRIVILEGE	1	CLASS_NAME / ATTR_NAME
	2	PRIVILEGE
	3	GRANTABLE
CUBRID_SCH_PRIMARY_KEY	1	CLASS_NAME
	2	ATTR_NAME
	3	KEY_SEQ	base:1
	4	KEY_NAME
CUBRID_SCH_IMPORTED_KEYS / CUBRID_SCH_EXPORTED_KEYS / CUBRID_SCH_CROSS_REFERENCE	1	PKTABLE_NAME
	2	PKCOLUMN_NAME
	3	FKTABLE_NAME	base:1
	4	FKCOLUMN_NAME
	5	KEY_SEQ	base:1
	6	UPDATE_ACTION	0:cascade 1:restrict 2:no action 3:set null
	7	DELETE_ACTION	0:cascade 1:restrict 2:no action 3:set null
	8	FK_NAME
	9	PK_NAME

参数

conn_identifier: Connection identifier.
schema_type: Schema data that you want to know.
class_name: Class you want to know the schema of.
attr_name: Attribute you want to know the schema of.

返回值

Array containing the schema information, when process is successful;

FALSE, when process is unsuccessful

更新日志

版本	说明
8.3.1	Change return value: when process is unsuccessful, return false, not -1.

范例

Example #1 cubrid_schema() example


<?php
$conn = cubrid_connect("localhost", 33000, "demodb");

printf("\n--- Primary Key ---\n");
$pk = cubrid_schema($conn, CUBRID_SCH_PRIMARY_KEY, "game");
var_dump($pk);

printf("\n--- Foreign Keys ---\n");
$fk = cubrid_schema($conn, CUBRID_SCH_IMPORTED_KEYS, "game");
var_dump($fk);

printf("\n--- Column Attribute ---\n");
$attr = cubrid_schema($conn, CUBRID_SCH_ATTRIBUTE, "stadium", "area");
var_dump($attr);

cubrid_disconnect($conn);
?>

以上例程会输出：


--- Primary Key ---
array(3) {
  [0]=>
  array(4) {
    ["CLASS_NAME"]=>
    string(4) "game"
    ["ATTR_NAME"]=>
    string(12) "athlete_code"
    ["KEY_SEQ"]=>
    string(1) "3"
    ["KEY_NAME"]=>
    string(41) "pk_game_host_year_event_code_athlete_code"
  }
  [1]=>
  array(4) {
    ["CLASS_NAME"]=>
    string(4) "game"
    ["ATTR_NAME"]=>
    string(10) "event_code"
    ["KEY_SEQ"]=>
    string(1) "2"
    ["KEY_NAME"]=>
    string(41) "pk_game_host_year_event_code_athlete_code"
  }
  [2]=>
  array(4) {
    ["CLASS_NAME"]=>
    string(4) "game"
    ["ATTR_NAME"]=>
    string(9) "host_year"
    ["KEY_SEQ"]=>
    string(1) "1"
    ["KEY_NAME"]=>
    string(41) "pk_game_host_year_event_code_athlete_code"
  }
}

--- Foreign Keys ---
array(2) {
  [0]=>
  array(9) {
    ["PKTABLE_NAME"]=>
    string(7) "athlete"
    ["PKCOLUMN_NAME"]=>
    string(4) "code"
    ["FKTABLE_NAME"]=>
    string(4) "game"
    ["FKCOLUMN_NAME"]=>
    string(12) "athlete_code"
    ["KEY_SEQ"]=>
    string(1) "1"
    ["UPDATE_RULE"]=>
    string(1) "1"
    ["DELETE_RULE"]=>
    string(1) "1"
    ["FK_NAME"]=>
    string(20) "fk_game_athlete_code"
    ["PK_NAME"]=>
    string(15) "pk_athlete_code"
  }
  [1]=>
  array(9) {
    ["PKTABLE_NAME"]=>
    string(5) "event"
    ["PKCOLUMN_NAME"]=>
    string(4) "code"
    ["FKTABLE_NAME"]=>
    string(4) "game"
    ["FKCOLUMN_NAME"]=>
    string(10) "event_code"
    ["KEY_SEQ"]=>
    string(1) "1"
    ["UPDATE_RULE"]=>
    string(1) "1"
    ["DELETE_RULE"]=>
    string(1) "1"
    ["FK_NAME"]=>
    string(18) "fk_game_event_code"
    ["PK_NAME"]=>
    string(13) "pk_event_code"
  }
}

--- Column Attribute ---
array(1) {
  [0]=>
  array(13) {
    ["ATTR_NAME"]=>
    string(4) "area"
    ["DOMAIN"]=>
    string(1) "7"
    ["SCALE"]=>
    string(1) "2"
    ["PRECISION"]=>
    string(2) "10"
    ["INDEXED"]=>
    string(1) "0"
    ["NON_NULL"]=>
    string(1) "0"
    ["SHARED"]=>
    string(1) "0"
    ["UNIQUE"]=>
    string(1) "0"
    ["DEFAULT"]=>
    NULL
    ["ATTR_ORDER"]=>
    string(1) "4"
    ["CLASS_NAME"]=>
    string(7) "stadium"
    ["SOURCE_CLASS"]=>
    string(7) "stadium"
    ["IS_KEY"]=>
    string(1) "0"
  }
}