(PECL trader >= 0.2.0)
Parabolic SAR
array trader_sar ( array $high, array $low [, float $acceleration [, float $maximum ]] )
Parameters:
high
High price, array of real values.
low
Low price, array of real values.
acceleration
Acceleration Factor used up to the Maximum value. Valid range from 0 to TRADER_REAL_MAX.
maximum
Acceleration Factor Maximum value. Valid range from 0 to TRADER_REAL_MAX.
Returns:
Returns an array with calculated data or false on failure.
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