PHP Manual
SDO 函数
Test whether a property was set prior to being modified

SDO_DAS_Setting::isSet

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SDO_DAS_Setting::isSet — Test whether a property was set prior to being modified

说明

SDO_DAS_Setting::isSet ( void ) : bool

Warning

此函数是实验性的。此函数的表象，包括名称及其相关文档都可能在未来的 PHP 发布版本中未通知就被修改。使用本函数风险自担。

Test whether a property was set prior to being modified. If it was set prior to being modified then the SDO_DAS_Setting will also contain the old value.

参数

None.

返回值

Returns TRUE if the property was set prior to being modified, otherwise returns FALSE.

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