php man page for variant_cmp

VARIANT_CMP(3)								 1							    VARIANT_CMP(3)

variant_cmp - Compares two variants

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

DESCRIPTION
	Compares $left with $right.

	This function will only compare scalar values, not arrays or variant records.

PARAMETERS
	      o $left
		- The left operand.

	      o $right
		- The right operand.

	      o $lcid
		- A valid Locale Identifier to use when comparing strings (this affects string collation).

	      o $flags
		-$flags can be one or more of the following values OR'd together, and affects string comparisons:

	      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(3) in PHP cor-
	      responds to VarAdd()  in the MSDN documentation.

RETURN VALUES
	Returns one of the following:

       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 |
       |	    |					    |
       +------------+---------------------------------------+
PHP Documentation Group 													    VARIANT_CMP(3)