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(PHP 5, PHP 7)
variant_cmp — Compares two variants
$left
, mixed $right
[, int $lcid
[, int $flags
]] )
Compares left
with right
.
This function will only compare scalar values, not arrays or variant records.
left
The left operand.
right
The right operand.
lcid
A valid Locale Identifier to use when comparing strings (this affects string collation).
flags
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:
对于所有变量运算函数,本函数的参数可以是 PHP 内置的类型(整数,字符串,浮点数,布尔型或者
NULL
),或者是一个 COM,VARIANT 或者 DOTNET 类的实例。PHP 内置类型将会使用和构造VARIANT类相同的规则转换成变量。COM 和 DOTNET 对象的值将会取其默认属性并被当成变量值使用。变量运算函数是同名函数在 COM 库中的外包;有关此类函数的更多信息参见 MSDN 库。PHP 函数命名有少许区别,例如 PHP 中的 variant_add() 对应于 MSDN 文档中的 VarAdd()。
Returns one of the following:
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 |