Summary of php rounding methods

Sum up the php rounding method: (1) rounded up: ceil () & mdash; gets the next integer not smaller than the parameter. if there is a decimal part, it goes into one, the returned type is float1 & lt ;? Php2 // Get 3 $ c_1ceil (3.4); 4 echo $ c_1. & amp; #39; & lt; br/& gt; & amp; #39; 56 $ c_2

Summary of php rounding methods:

(1) rounded up: ceil () -- gets the next integer not smaller than the parameter. if there is a decimal part, the return type is float.

1
2
// Obtain the largest value
3
$ C_1 = ceil (3.4 );
4
Echo $ c_1 .'
';
5
 
6
$ C_2 = ceil (3.5 );
7
Echo $ c_2 .'
';
8
?>
Result:

 

 

 

(2) rounded down: floor () -- gets the next integer not greater than the parameter. if there is a decimal part, the return type is float.

1
2
// Small
3
$ F_1 = floor (3.4 );
4
Echo $ f_1 .'
';
5
 
6
$ F_2 = floor (3.5 );
7
Echo $ f_2 .'
';
8
?>
Result:

 

 

 

(3) rounding method: round () -- rounds the floating point number. the function has two parameters. The second parameter can be used to set the decimal places reserved for the result.

01
02
// Rounding method
03
$ R_1 = round (3.4 );
04
$ R_2 = round (3.5 );
05
Echo $ r_1 .'
';
06
Echo $ r_2 .'
';
07
 
08
$ R_3 = round (3.444, 2 );
09
$ R_4 = round (3.445, 2 );
10
Echo $ r_3 .'
';
11
Echo $ r_4 .'
';
12
?>
Result:

 

 

 

 

(4) forced conversion method: intval () -- convert a variable to an integer type. a function has two parameters. The first parameter can be an array or any type variable other than a class, the second parameter sets the hexadecimal value of the first parameter, and then converts the number of hexadecimal values to a decimal integer.

 
01
02
// Forced conversion
03
$ I _1 = intval (3.4 );
04
Echo $ I _1 .'
';
05
 
06www.2cto.com
$ I _2 = intval (3.5 );
07
Echo $ I _2 .'
';
08
 
09
$ I _3 = intval (a, 16 );
10
Echo $ I _3 .'
';
11
?>

Author: frylan