trader_avgpricetrader_bbands
(PECL trader >= 0.2.0)
trader_bbands — Bollinger Bands
Description
array trader_bbands
( array
$real
[, integer $timePeriod
[, float $nbDevUp
[, float $nbDevDn
[, integer $mAType
]]]] )
Parameters
-
real -
Array of real values.
-
timePeriod -
Number of period. Valid range from 2 to 100000.
-
nbDevUp -
Deviation multiplier for upper band. Valid range from TRADER_REAL_MIN to TRADER_REAL_MAX.
-
nbDevDn -
Deviation multiplier for lower band. Valid range from TRADER_REAL_MIN to TRADER_REAL_MAX.
-
mAType -
Type of Moving Average. TRADER_MA_TYPE_* series of constants should be used.
Return Values
Returns an array with calculated data or false on failure.
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