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# fbsql_fetch_field

(PHP 4 >= 4.0.6, PHP 5)

fbsql_fetch_field -- 結果からカラム情報を得て、オブジェクトとして返す

## 説明

object fbsql_fetch_field ( resource result [, int field_offset])

Returns an object containing field information.

fbsql_fetch_field() can be used in order to obtain information about fields in a certain query result. If the field offset isn't specified, the next field that wasn't yet retrieved by fbsql_fetch_field() is retrieved.

The properties of the object are:

- name - column name

- table - name of the table the column belongs to

- max_length - maximum length of the column

- not_null - 1 if the column cannot be `NULL`

- type - the type of the column

例 1. fbsql_fetch_field()の例
`<?php fbsql_connect ($host, $user, $password) or die ("Could not connect"); $result = fbsql_db_query ("database", "select * from table") or die ("Query failed"); # get column metadata $i = 0; while ($i < fbsql_num_fields ($result)) { echo "Information for column $i:<BR>\n"; $meta = fbsql_fetch_field ($result); if (!$meta) { echo "No information available<BR>\n"; } echo "<PRE> max_length: $meta->max_length name: $meta->name not_null: $meta->not_null table: $meta->table type: $meta->type </PRE>"; $i++; } fbsql_free_result ($result); ?>`

fbsql_field_seek()も参照下さい。

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fbsql_fetch_assoc | 上に戻る | fbsql_fetch_lengths