php man page for trader_var

TRADER_VAR(3)								 1							     TRADER_VAR(3)

trader_var - Variance

SYNOPSIS
       array trader_var (array	$real, [integer  $timePeriod], [float  $nbDev])

DESCRIPTION
PARAMETERS
	      o $real
		- Array of real values.

	      o $timePeriod
		- Number of period. Valid range from 2 to 100000.

	      o $nbDev
		-

RETURN VALUES
       Returns an array with calculated data or false on failure.

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