PHP Manual
ODBC 函数
Number of columns in a result

odbc_num_fields

(PHP 4, PHP 5, PHP 7)

odbc_num_fields — Number of columns in a result

说明

odbc_num_fields ( resource $result_id ) : int

Gets the number of fields (columns) in an ODBC result.

参数

result_id: The result identifier returned by odbc_exec().

返回值

Returns the number of fields, or -1 on error.

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