php man page for variant_idiv

VARIANT_IDIV(3) 							 1							   VARIANT_IDIV(3)

variant_idiv - Converts variants to integers and then returns the result from dividing them

SYNOPSIS
       mixed variant_idiv (mixed  $left, mixed	$right)

DESCRIPTION
	Converts $left and $right to integer values, and then performs integer division.

PARAMETERS
	      o $left
		- The left operand.

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

RETURN VALUES
       Variant Integer Division Rules

       +--------------------------------------------------+---------------------------------------------------+
       |		       If			  |						      |
       |						  |						      |
       |						  |			  Then			      |
       |						  |						      |
       +--------------------------------------------------+---------------------------------------------------+
       |Both expressions are of the string, date, charac- |						      |
       |ter, boolean type				  |						      |
       |						  |						      |
       |						  |	    Division and integer is returned	      |
       |						  |						      |
       |One  expression  is a string type and the other a |						      |
       |character					  |						      |
       |						  |						      |
       |						  |			Division		      |
       |						  |						      |
       |One expression is numeric  and	the  other  is	a |						      |
       |string						  |						      |
       |						  |						      |
       |						  |			Division		      |
       |						  |						      |
       |	  Both expressions are numeric		  |						      |
       |						  |						      |
       |						  |			Division		      |
       |						  |						      |
       |	    Either expression is NULL		  |						      |
       |						  |						      |
       |						  |		    NULL is returned		      |
       |						  |						      |
       |	   Both expressions are empty		  |						      |
       |						  |						      |
       |						  | A  com_exception  with  code  DISP_E_DIVBYZERO is |
       |						  | thrown					      |
       |						  |						      |
       +--------------------------------------------------+---------------------------------------------------+
SEE ALSO
       variant_div(3).

PHP Documentation Group 													   VARIANT_IDIV(3)