Php/docs/function.odbc-columns

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odbc_columns

(PHP 4, PHP 5, PHP 7)

odbc_columnsLists 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