Php/docs/function.ingres-field-nullable

• PHP Manual
• Ingres 函数
• Test if a field is nullable

ingres_field_nullable

(PHP 4 >= 4.0.2, PHP 5 < 5.1.0, PECL ingres >= 1.0.0)

ingres_field_nullable — Test if a field is nullable

说明

ingres_field_nullable ( resource $result , int $index ) : bool

Test if a field is nullable.

Note:

Related Configurations

See ingres.array_index_start in Runtime Configuration

参数

result

The query result identifier

index

index is the field whose nullability will be retrieved.

The possible values of index depend upon the value of ingres.array_index_start. If ingres.array_index_start is 1 (the default) then index must be between 1 and the value returned by ingres_num_fields(). If ingres.array_index_start is 0 then index must be between 0 and ingres_num_fields() - 1.

返回值

ingres_field_nullable() returns true if the field can be set to the null value and false if it cannot

参见

• ingres_query() - Send an SQL query to Ingres
• ingres_fetch_array() - Fetch a row of result into an array
• ingres_fetch_assoc() - Fetch a row of result into an associative array
• ingres_fetch_object() - Fetch a row of result into an object
• ingres_fetch_row() - Fetch a row of result into an enumerated array