Summary of four commonly used methods for taking integer functions in PHP_PHP Tutorial

ceil — Rounding to the nearest integer
Explanation
float ceil (float value)
Returns the next integer that is not less than value. If value has a decimal part, it will be rounded up. The type returned by ceil() is still float because the range of float values ​​is usually larger than that of integer.
Example 1. ceil() example

Copy code The code is as follows:

echo ceil(4.3); // 5
echo ceil(9.999); // 10
?>

floor — rounding by rounding
Explanation
float floor (float value)
Returns the next integer that is not greater than value, and rounds the decimal part of value. The type returned by floor() is still float because the range of float values ​​is usually larger than that of integer.
Example 1. floor() Example

Copy code The code is as follows:

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

round — Round floating point numbers
Description
float round (float val [, int precision])
Returns the result of rounding val according to the specified precision (the number of decimal digits after the decimal point). precision can also be negative or zero (default).
Example 1. round() example

Copy code The code is as follows:

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
?>

intval—convert variables into integer types
Example intval()

Copy code The code is as follows:

echo intval(4.3); //4
echo intval(4.6); // 4
?>

http://www.bkjia.com/PHPjc/325691.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/325691.htmlTechArticleceil — Further rounding instructions float ceil (float value) returns the next integer that is not less than value, value If there is a decimal part, round it up. The type returned by ceil() is still floa...