Explore the rules for using PHP floating point type Integer

We often use the need for rounding in actual coding. Today we will introduce some details for you.

PHP floating point type Integer ceil -- one method integer
Description
Float ceil (float value)
Returns the next integer of no less than value. If the value has a decimal part, it is entered in one place. The type returned by ceil () is still float, because the float value range is usually larger than integer.

Example 1. ceil () Example

 
 

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

Floor of PHP floating point type Integer -- rounding
Description
Float floor (float value)
Returns the next integer not greater than value and rounds the decimal part of value. The return type of floor () is still float, because the float value range is usually larger than that of integer.

Example 1. floor () Example

 
 

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

Round of the PHP floating point type -- round the floating point number
Description
Float round (float val [, int precision])
Returns the result of rounding val by the specified precision (number of digits after decimal point. Precision can also be negative or zero (default ).

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   
  
  
?>   
  
  
 
 
 

PHP floating point type Integer intval --- convert variable to integer type

Example intval ()

 
 

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

We hope that the above PHP floating point type Integer functions will be helpful to everyone.