cubrid_schema

Get the requested schema information

&reftitle.description; `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. To get information about specific class, set the `class_name`, to get information about specific attribute (can be used only with `CUBRID_SCH_ATTR_PRIVILEGE`), set the `attr_name`.

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 |

&reftitle.parameters;

`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.

&reftitle.returnvalues;

Array containing the schema information, when process is successful,&return.falseforfailure;.

&reftitle.changelog;

&Version; | &Description;
8.3.1 | Change return value: when process is unsuccessful, return false, not -1.

&reftitle.examples;

### `cubrid_schema` example

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

    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);
    ?>

&example.outputs;

    --- 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"
      }
    }