This article is the official HTML5 training course for h5edu institutions, mainly introduces: JavaScript intensive tutorial--javascript Math (Arithmetic) object The function of the Math object is: Perform common arithmetic tasks. Round () How to use
Ceil is a function for getting a value from the up position; floor is a function for rounding out the decimal places to get a value; round is a function for rounding out. Ceil definition and usage: the ceil () function rounds up to the nearest
A ceil is a function that gets a value upward;
Floor is the function of rounding out the decimal place to get a value;
Round is a function that is used for rounding.
CeilDefinition and Usage:
The Ceil () function rounds up to the nearest
Ceil is a function for getting a value from the up position; floor is a function for rounding out the decimal places to get a value; round is a function for rounding out. Ceil definition and usage: The ceil () function rounds up to the nearest
Decimal Example:
PHP retains two decimal places and rounded up
Copy Code code as follows:
$n = 0.1265489;
Echo sprintf ("%.2f", $n); 0.13
You can see we used the sprintf function to format the $n%.2f is the target format,
PHP takes integer functions commonly used in four ways:
1. Direct rounding, discarding decimals, preserving integers: intval ();2 Rounding and Rounding: round ();3. Rounding up, there are decimals on the addition of 1:ceil ();4. Rounding Down:
Example of PHP rounding, rounding, and using the round function. Example of using the PHP rounding, rounding, and round functions, and rounding the round decimal places: PHP keeps two decimal places and rounds them to copy the code as follows: $ n0.1
PHP takes integer functions commonly used in four ways:1. Direct rounding, discarding decimals, preserving integers: intval ();2 Rounding and Rounding: round ();3. Rounding up, there are decimals on the addition of 1:ceil ();4. Rounding Down: Floor (
When you encounter a situation in PHP that requires the results of division to be rounded, you need to use the following methods:1. Round: RoundingThe round () function rounds a floating-point number.Syntax: Round (x, PREC)
Improve PHP speed in an all-round way. One of the advantages of PHP is that it is fast. it is enough for general website applications. However, if the site traffic is high, bandwidth is narrow, or other factors make the server generate PHP, one of
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