PHP conversion code between percentage and decimal

This article introduces to you the content of the article about the mutual conversion code between PHP percentage and decimal. It has a good reference value and I hope it can help friends in need.

PHP Percent to decimal conversion:

 = "20.544545%" ()/100;
结果：0.20544545

php Decimal to percent conversion function:

没有位数要求：

$n*100.'%';
如果有小说位数有要求 

　（1）可以用 sprintf("%01.2f", $n*100).'%'; 
　　（2）先 四舍五入，后转换 
　　　　$str=round(5.055, 2); // 5.06 
　　　　$str1=$str."%"; //5.06% 
要用到四舍五入函数round()
　　示例：
　　$hhl=round(($hh/$totalpj)*100).’%';//好评率
　　$lhl=round(($lh/$totalpj)*100).’%';//良好率
　　$ybl=round(($yb/$totalpj)*100).’%';//一般率
　　$cl=round(($c/$totalpj)*100).’%';//差率
　　$hcl=round(($hc/$totalpj)*100).’%';//很差率

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