Php/docs/function.cubrid-num-fields

• PHP Manual
• CUBRID MySQL 兼容性函数
• Return the number of columns in the result set

cubrid_num_fields

(PECL CUBRID >= 8.3.0)

cubrid_num_fields — Return the number of columns in the result set

说明

cubrid_num_fields ( resource $result ) : int

This function returns the number of columns in the result set, on success, or it returns FALSE on failure.

参数

result

result comes from a call to cubrid_execute(), cubrid_query() and cubrid_prepare()

返回值

Number of columns, on success.

-1 if SQL sentence is not SELECT.

false when process is unsuccessful.

范例

Example #1 cubrid_num_fields() example

<?php$conn = cubrid_connect("localhost", 33000, "demodb");$req = cubrid_execute($conn, "SELECT * FROM code");$row_num = cubrid_num_rows($req);$col_num = cubrid_num_fields($req);printf("Row Num: %d\nColumn Num: %d\n", $row_num, $col_num);cubrid_disconnect($conn);?>

以上例程会输出：

Row Num: 6
Column Num: 2