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SDO_DAS_Setting::isSet — Test whether a property was set prior to being modified
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.
None.
Returns TRUE
if the property was set prior to being modified,
otherwise returns FALSE
.