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Composer地址:https://packagist.org/packages/werbenhu/php-number-slicing
GitHub地址:https://github.com/werbenhu/php-number-slicing
主要代码:NumberSlicing.php
思路:将数字按精度放大倍数,比如切割数字1,切割的份数是10,精度是0.01,则将1放大100 X 10倍,然后再来对加了1000倍权重后的值进行切割。切割完成之后,再将权重去除,保证总值是1。
<"htmlcode">use Werben\Tools\NumberSlicing; function testIntSlicing2IntOne() { $precision = 1; //精确度 eg: 1, 0.1, 0.01, 0.01 $size = 10; //切割的份数,the size of the number to slicing $min = 3; //最小额度,最小额度必须大于最小精度,min amount eg: 3, 0.23, 0.05, 0.008 $number = 100; //要切割的数字,the number $items = NumberSlicing::numberSlicing($number, $size, $precision, $min); $sum = 0.0; $ret_min = $number; foreach ($items as $value) { $sum += $value; if ($ret_min > $value) { $ret_min = $value; } } $count = count($items); echo "count: $count, sum: $sum, ret_min: $ret_min\n"; echo "items : ". json_encode($items) ."\n"; } function testIntSlicing2IntTwo() { $precision = 1; //精确度 eg: 1, 0.1, 0.01, 0.01 $size = 30; //切割的份数,the size of the number to slicing $min = 18666; //最小额度,最小额度必须大于最小精度,min amount eg: 3, 0.23, 0.05, 0.008 $number = 800000; //要切割的数字,the number $items = NumberSlicing::numberSlicing($number, $size, $precision, $min); $sum = 0.0; $ret_min = $number; foreach ($items as $value) { $sum += $value; if ($ret_min > $value) { $ret_min = $value; } } $count = count($items); echo "count: $count, sum: $sum, ret_min: $ret_min\n"; echo "items : ". json_encode($items) ."\n"; } function testIntSlicing2FloatOne() { $precision = 0.01; //精确度 eg: 1, 0.1, 0.01, 0.01 $size = 1000; //切割的份数,the size of the number to slicing $min = 0.05; //最小额度,最小额度必须大于最小精度,min amount eg: 3, 0.23, 0.05, 0.008 $number = 100; //要切割的数字,the number $items = NumberSlicing::numberSlicing($number, $size, $precision, $min); $sum = 0.0; $ret_min = $number; foreach ($items as $key => $value) { $sum += $value; if ($ret_min > $value) { $ret_min = $value; } } $count = count($items); echo "count: $count, sum: $sum, ret_min: $ret_min\n"; echo "items: ". json_encode($items) ."\n"; } function testIntSlicing2FloatTwo() { $precision = 0.00001; //精确度 eg: 1, 0.1, 0.01, 0.01 $size = 1000; //切割的份数,the size of the number to slicing $min = 0.00005; //最小额度,最小额度必须大于最小精度,min amount eg: 3, 0.23, 0.05, 0.008 $number = 5; //要切割的数字,the number $items = NumberSlicing::numberSlicing($number, $size, $precision, $min); $sum = 0.0; $ret_min = $number; foreach ($items as $key => $value) { $sum += $value; if ($ret_min > $value) { $ret_min = $value; } } $count = count($items); echo "count: $count, sum: $sum, ret_min: $ret_min\n"; echo "items: ". json_encode($items) ."\n"; }总结
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