variant_cat concatenates two variant values together and returns the result php函数


variant_cat

(PHP 5)

variant_catconcatenates two variant values together and returns the result

说明

mixed variant_cat ( mixed $left , mixed $right )

Concatenates left with right and returns the result.

This function is notionally equivalent to $left . $right.

参数

left

The left operand.

right

The right operand.

Note:

As with all the variant arithmetic functions, the parameters for this function can be either a PHP native type (integer, string, floating point, boolean or NULL), or an instance of a COM, VARIANT or DOTNET class. PHP native types will be converted to variants using the same rules as found in the constructor for the VARIANT class. COM and DOTNET objects will have the value of their default property taken and used as the variant value.

The variant arithmetic functions are wrappers around the similarly named functions in the COM library; for more information on these functions, consult the MSDN library. The PHP functions are named slightly differently; for example variant_add() in PHP corresponds to VarAdd() in the MSDN documentation.

返回值

Returns the result of the concatenation.

参见



相关阅读:
variant_cmp Compares two variants
variant_date_from_timestamp Returns a variant date representation of a Unix timestamp
variant_date_to_timestamp Converts a variant date/time value to Unix timestamp
variant_div Returns the result from dividing two variants
variant_eqv Performs a bitwise equivalence on two variants
variant_fix Returns the integer portion of a variant
variant_get_type Returns the type of a variant object
variant_idiv Converts variants to integers and then returns the result from dividing them
variant_imp Performs a bitwise implication on two variants
variant_int Returns the integer portion of a variant
variant_mod Divides two variants and returns only the remainder
variant_mul Multiplies the values of the two variants
variant_neg Performs logical negation on a variant
variant_not Performs bitwise not negation on a variant
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