PHP rounding to exact decimal places and rounding_PHP tutorial

The functions to get decimal places in PHP include sprintf, ceil, floor, round and other functions to achieve rounding. Let’s take a look at specific examples.

This article will use PHP to round numbers to N decimal places, as well as use PHP to round numbers to make a brief summary.

(1)php retains three decimal places and rounds

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代码如下	复制代码
$num=0.0215489; echo sprintf("%.3f", $num); // 0.022

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$num=0.0215489;

echo sprintf("%.3f", $num); // 0.022

代码如下	复制代码
$num=0.0215489; echo substr(sprintf("%.4f", $num),0,-1); // 0.021

代码如下	复制代码
echo ceil(4.3);    // 5 echo ceil(9.999);  // 10

(2)php retains three decimal places and does not round

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代码如下	复制代码
echo floor(4.3);   // 4 echo floor(9.999); // 9

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$num=0.0215489;

echo substr(sprintf("%.4f", $num),0,-1); // 0.021

代码如下	复制代码
echo round(3.4); // 3 echo round(3.5); // 4 echo round(3.6); // 4 echo round(3.6, 0); // 4 echo round(1.95583, 2); // 1.96 echo round(1241757, -3); // 1242000 echo round(5.045, 2); // 5.05 echo round(5.055, 2); // 5.06 ?>

(3) PHP takes an integer by one step (this will be used in the page number program of the paging program)

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echo ceil(4.3); // 5 echo ceil(9.999); // 10 (4) PHP rounding method to get an integer

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echo floor(4.3); // 4 echo floor(9.999); // 9

(5),round function Example 1. round() example

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echo round(3.4);             // 3<🎜> echo round(3.5);             // 4<🎜> echo round(3.6);              // 4<🎜> echo round(3.6, 0); // 4<🎜> echo round(1.95583, 2); // 1.96<🎜> echo round(1241757, -3); // 1242000<🎜> echo round(5.045, 2); // 5.05<🎜> echo round(5.055, 2); // 5.06<🎜> ?> http://www.bkjia.com/PHPjc/634548.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/634548.htmlTechArticleThe functions to get decimal places in php include sprintf, ceil, floor, round and other functions to achieve rounding. Below we Let’s take a look at specific examples. This article will use php to quadruple numbers...