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php 保存小数点 总结

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2016-06-13 11:16:29956browse

php 保留小数点 总结

php保留两位小数并且四舍五入?

Php代码??收藏代码
  1. $num?=?123213.666666;??
  2. echo?sprintf("%.2f",?$num);??




php保留两位小数并且不四舍五入?

Php代码??收藏代码
  1. $num?=?123213.666666;??
  2. echo?sprintf("%.2f",substr(sprintf("%.3f",?$num),?0,?-2));??



php进一法取整?

Php代码??收藏代码
  1. echo?ceil(4.3);????//?5??
  2. echo?ceil(9.999);??//?10??



php舍去法,取整数?

Php代码??收藏代码
  1. echo?floor(4.3);???//?4??
  2. echo?floor(9.999);?//?9??
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