Introduction to the specific use of the PHP rounding function _php Tutorial

For a powerfulCeil--into a method to take the whole
Description
float ceil (float value)
Returns the next integer not less than value, in which value is entered if there is a fractional part. The type returned by Ceil () is still float, because the range of float values is usually larger than the integer.

PHP takes an integer function Example 1. Ceil () example

 
  
  

  
   
   
< ? PHP 
  
   
   
echo ceil (4.3); 5 
  
   
   
echo ceil (9.999); 10 
  
   
   
?> 
  
   
   

 
  
  

Floor--The Rounding method
Description
Float floor (float value)
Returns the next integer not less than value, rounding out the fractional part of value. The type returned by floor () is still float, because the range of float values is usually larger than the integer.

PHP takes an integer function Example 1. Floor () example

 
  
  

  
   
   
< ? PHP 
  
   
   
echo floor (4.3); 4 
  
   
   
echo Floor (9.999); 9 
  
   
   
?> 
  
   
   

 
  
  

Round--Rounding a floating-point number
Description
Float round (float val [, int precision])
Returns the result of rounding Val based on the specified precision precision (number of digits after decimal point). Precision can also be negative or 0 (the default value).

PHP takes an integer function Example 1. Round () example

 
  
  

  
   
   
< ? PHP 
  
   
   
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---to integer patterns of variables

PHP Rounding Function Example intval ()

 
  
  

  
   
   
< ? PHP 
  
   
   
echo intval (4.3); 4 
  
   
   
Echo intval (4.6); 4 
  
   
   
?>
  
   
   

 
  
  

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