(PHP 5)
variant_cmp — Compares two variants
Compares left with right and returns one of the following values:
value | meaning |
---|---|
VARCMP_LT | left is less than right |
VARCMP_EQ | left is equal to right |
VARCMP_GT | left is greater than right |
VARCMP_NULL | Either left , right or both are NULL |
This function will only compare scalar values, not arrays or variant records.
lcid is a valid Locale Identifier to use when comparing strings (this affects string collation). flags can be one or more of the following values OR'd together, and affects string comparisons:
value | meaning |
---|---|
NORM_IGNORECASE | Compare case insensitively |
NORM_IGNORENONSPACE | Ignore nonspacing characters |
NORM_IGNORESYMBOLS | Ignore symbols |
NORM_IGNOREWIDTH | Ignore string width |
NORM_IGNOREKANATYPE | Ignore Kana type |
NORM_IGNOREKASHIDA | Ignore Arabic kashida characters |
Note: 对于所有的变量算法函数,此函数的参数可以要么是 PHP 自身的类型(整型,字符串,浮点型,布尔型或者 NULL),要么是一个 COM,VARIANT 或 DOTNET 类的实例。PHP 自身类型将被转换为变量,使用与 VARIANT 类的构造函数中相同的规则。COM 和 DOTNET 对象将具有其默认属性的值,取得并作为变量值使用。
变量算法函数是 COM 库中与其名称接近的函数的封装。此类函数的更多信息请参考 MSDN 库。PHP 函数命名有少许不同,例如 PHP 中的 variant_add() 对应于 MSDN 文档中的 VarAdd()。