php method to set up not using scientific notation: first use the number_format() function to format the number by thousands grouping, the syntax is "number_format(number)"; then output the formatted number through the echo statement .
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When you meet scientific notation
The solution is to
Use the PHP formatting number function:number_format()
number_format() function formats numbers by grouping thousands.
Note: This function supports one, two or four parameters (not three).
Syntax:
number_format(number,decimals,decimalpoint,separator)
number Required. The number to format. If no other parameters are set, the number is formatted without a decimal point and with a comma (,) as the thousands separator.
decimals Optional. Specify the number of decimals. If this parameter is set, numbers are formatted using a period (.) as the decimal point.
decimalpoint Optional. Specifies the string used as the decimal point.
-
separator Optional. Specifies the string used as thousands separator. Only the first character of the parameter is used. For example, "xxx" only outputs "x".
Note: If this parameter is set, all other parameters are required.
The usage method is as follows:
echo number_format("5000000")."<br>"; //5,000,000 echo number_format("5000000",2)."<br>"; //5,000,000.00 echo number_format("5000000",2,",","."); //5.000.000,00
There is also a chestnut online:
//举个例子 echo '1869879738796128'; //默认结果为:1.8698797387961E+15 //解决办法 echo number_format(‘1869879738796128’, 0, '', ''); //输出结果为:1869879738796128
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在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。


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