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odbc_columns

(PHP 4, PHP 5, PHP 7, PHP 8)

odbc_columns — Lists the column names in specified tables

说明

odbc_columns(
    Odbc\Connection $odbc,
    ?string $catalog = null,
    ?string $schema = null,
    ?string $table = null,
    ?string $column = null
): Odbc\Result|false

Lists all columns in the requested range.

参数

odbc

ODBC 连接对象，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

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

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

返回 ODBC 结果对象 或者在失败时返回 false。

The result set has the following columns:

Drivers can report additional columns.

The result set is ordered by TABLE_CAT, TABLE_SCHEM, TABLE_NAME and ORDINAL_POSITION.

更新日志

版本 说明
8.4.0 odbc 现在需要 Odbc\Connection 实例；之前需要 resource。
8.0.0 schema, table and column are now nullable.

示例

示例 #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
}
?>

以上示例的输出类似于：

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