trader_cdlengulfing() always returning false

[pandglobal]

From manual page: https://php.net/function.trader-cdlengulfing

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This trader_cdlengulfing() needs to be updated as it returns false always, even when an engulfing pattern was submitted to it yet it returns false. same thing with most of trader candle sticks pattern detecting function.
Example:
// Previous candle (1st)
$prev_open = 25;
$prev_high = 30;
$prev_low = 20;
$prev_close = 22;

// Current candle (2nd)
$current_open = 18;
$current_high = 48;
$current_low = 15;
$current_close = 40;

$open = array($prev_open, $current_open);
$high = array($prev_high, $current_high);
$low = array($prev_low, $current_low);
$close = array($prev_close, $current_close);

$engulfing = trader_cdlengulfing($open, $high, $low, $close);
var_dump($engulfing);

[damianwadley]

According to the source, it returns false on failure but will otherwise return an array. Are you sure you're using the function correctly? Any errors reported by trader_errno?

[pandglobal]

no errors, just var_dump return boolen false, and if the array is more than 2 it returns an arrays of empty values instead of boolen.
Also look at the previous candle data and current candle data i provided and also my usage of the function is correct but the results is always false