<?php
$opens = array(135.83, 139.52, 143.43, 143.6);
$highs = array(136.74, 141.99, 144.3, 144.3);
$lows = array(130.21, 136.7, 140.41, 141.37);
$closes = array(131.96, 137.09, 142.06, 143.16);
// (收盤價 - 開盤價) / (最高價 - 最低價)
$Balance_Of_Power = trader_bop($opens, $highs, $lows, $closes);
var_dump($Balance_Of_Power);
/*
array(4) {
[0]=>
float(-0.593) // (131.96 - 135.83) / (136.74 - 130.21)
[1]=>
float(-0.459) // (137.09 - 139.52) / (141.99 - 136.7)
[2]=>
float(-0.352) // (142.06 - 143.43) / (144.3 - 140.41)
[3]=>
float(-0.15) // (143.16 - 143.6) / (144.3 - 141.37)
}
*/