ibase_gen

Description

mixed ibase_gen_id ( string generator [, int increment [, resource link_identifier]] )

警告

本函数暂无文档，仅有参数列表。

Returns new generator value as integer, or as string if the value is too big.

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escoric at latinmail dot com
18-Aug-2004 01:00


$sql="INSERT INTO mitabla(campo1,campo2,..campo n) VALUES(GEN_ID(mitabla1_codigo_gen,1),'contenido 1', 'contenido 2', 'contenido n' )";

mfischer at php dot net
28-Apr-2004 07:54


Question arose on php-dev:





How does ibase_gen_id() handle 64bit values?





Interbase 6/Firebird generators are always 64-bit signed integers


(Firebird's BIGINT type), regardless of the platform the client is


running. 


On 64-bit platforms, this will never require conversion as PHP's int


type is 64 bits wide on those platforms. On 32-bit platforms, the


generated value is converted to a string if it exceeds the limits of a


32-bit signed integer.


(This behaviour is consistent with the ibase_fetch_*() functions, that


will use strings to represent numerical values that cannot be represented


accurately using native PHP numerical types.)





[Edited by PHP/Interbase maintainer.]

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