Get the number of elements in collection type column using OID

# cubrid_col_size

(PECL CUBRID >= 8.3.0)

cubrid_col_size — Get the number of elements in collection type column using OID

### 説明

cubrid_col_size ( resource `$conn_identifier` , string `$oid` , string `$attr_name` ) : int

The cubrid_col_size() function is used to get the number of elements in a collection type (set, multiset, sequence) attribute.

### パラメータ

`conn_identifier`

  Connection identifier.

`oid`

  OID the instance that you want to work with.

`attr_name`

  Name of the attribute that you want to work with.

### 返り値

Number of elements, when process is successful.

`FALSE`, when process is unsuccessful.

### 変更履歴

バージョン | 説明
--- | ---
8.3.1 | Change return value: when process is unsuccessful, return false, not -1.

### 例

例1 cubrid_col_size() example

`<?php
$conn = cubrid_connect("localhost", 33000, "demodb", "dba");
@cubrid_execute($conn, "DROP TABLE foo");
cubrid_execute($conn, "CREATE TABLE foo(a int AUTO_INCREMENT, b set(int), c list(int), d char(10))");
cubrid_execute($conn, "INSERT INTO foo(a, b, c, d) VALUES(1, {1,2,3}, {11,22,33,333}, 'a')");
$req = cubrid_execute($conn, "SELECT * FROM foo", CUBRID_INCLUDE_OID);
cubrid_move_cursor($req, 1, CUBRID_CURSOR_FIRST);
$oid = cubrid_current_oid($req);
$attr = cubrid_col_get($conn, $oid, "b");
var_dump($attr);
$size = cubrid_col_size($conn, $oid, "b");
var_dump($size);
cubrid_close_request($req);
cubrid_disconnect($conn);
?>`

上の例の出力は以下となります。

    array(3) {
      [0]=>
      string(1) "1"
      [1]=>
      string(1) "2"
      [2]=>
      string(1) "3"
    }
    int(3)