Floor House de-rounding syntax format: 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.
echo floor (4.3); 4
echo Floor (9.999); 9
ceil Syntax format: 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
echo ceil (4.3); 5
echo ceil (9.999); 10
round rounding of floating-point numbers
Syntax: float round (float val [, int precision])
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
http://www.bkjia.com/PHPjc/327844.html www.bkjia.com true http://www.bkjia.com/PHPjc/327844.html techarticle Floor Rounding Syntax format: Float floor (float value) returns the next integer not less than value, rounding out the fractional part of value. Floor () The returned type is still Floa ...
