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PHP Functions

Function: variant_cmp

(PHP 5)

variant_cmp --  Compares two variants

Description

int variant_cmp ( mixed left, mixed right [, int lcid [, int flags]] )

Compares left with right and returns one of the following values:

Table 1. Variant Comparision Results

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:

Table 2. Variant Comparision Flags

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: 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.

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