php保留兩位小數(shù)并且四舍五入
Php代碼 $num?=?123213.666666; ??echo?sprintf("%.2f",?$num);??$num = 123213.666666;echo sprintf("%.2f", $num);
php保留兩位小數(shù)并且不四舍五入
Php代碼 $num?=?123213.666666; ??echo?sprintf("%.2f",substr(sprintf("%.3f",?$num),?0,?-2));??$num = 123213.666666;echo sprintf("%.2f",substr(sprintf("%.3f", $num), 0, -2));
php進(jìn)一法取整
Php代碼 echo?ceil(4.3);????//?5??echo?ceil(9.999);??//?10??echo ceil(4.3); // 5echo ceil(9.999); // 10
php舍去法精算，取整數(shù)
Php代碼 echo?floor(4.3);???//?4??echo?floor(9.999);?//?9
