Php/docs/function.odbc-columns
odbc_columns
(PHP 4, PHP 5, PHP 7)
odbc_columns — Lists the column names in specified tables
说明
odbc_columns
( resource $connection_id
[, string $catalog
[, string $schema
[, string $table_name
[, string $column_name
]]]] ) : resource|false
Lists all columns in the requested range.
参数
connection_id
- ODBC 连接标识符,详见 odbc_connect()。
catalog
- The catalog ('qualifier' in ODBC 2 parlance).
schema
- The schema ('owner' in ODBC 2 parlance). 此参数接受下列查询模式:
%
来匹配零到多个字符,_
来匹配单个字符。 table_name
- The table name. 此参数接受下列查询模式:
%
来匹配零到多个字符,_
来匹配单个字符。 column_name
- The column name. 此参数接受下列查询模式:
%
来匹配零到多个字符,_
来匹配单个字符。
返回值
Returns an ODBC result identifier 或者在失败时返回 false
.
The result set has the following columns:
TABLE_CAT
TABLE_SCHEM
TABLE_NAME
COLUMN_NAME
DATA_TYPE
TYPE_NAME
COLUMN_SIZE
BUFFER_LENGTH
DECIMAL_DIGITS
NUM_PREC_RADIX
NULLABLE
REMARKS
COLUMN_DEF
SQL_DATA_TYPE
SQL_DATETIME_SUB
CHAR_OCTET_LENGTH
ORDINAL_POSITION
IS_NULLABLE
Drivers can report additional columns.
The result set is ordered by TABLE_CAT
, TABLE_SCHEM
,
TABLE_NAME
and ORDINAL_POSITION
.
范例
Example #1 List Columns of a Table
<?php$conn = odbc_connect($dsn, $user, $pass);$columns = odbc_columns($conn, 'TutorialDB', 'dbo', 'test', '%');while (($row = odbc_fetch_array($columns))) { print_r($row); break; // further rows omitted for brevity}?>
以上例程的输出类似于:
Array ( [TABLE_CAT] => TutorialDB [TABLE_SCHEM] => dbo [TABLE_NAME] => TEST [COLUMN_NAME] => id [DATA_TYPE] => 4 [TYPE_NAME] => int [COLUMN_SIZE] => 10 [BUFFER_LENGTH] => 4 [DECIMAL_DIGITS] => 0 [NUM_PREC_RADIX] => 10 [NULLABLE] => 0 [REMARKS] => [COLUMN_DEF] => [SQL_DATA_TYPE] => 4 [SQL_DATETIME_SUB] => [CHAR_OCTET_LENGTH] => [ORDINAL_POSITION] => 1 [IS_NULLABLE] => NO )
参见
- odbc_columnprivileges() - Lists columns and associated privileges for the given table
- odbc_procedurecolumns() - Retrieve information about parameters to procedures