Several methods for php to be rounded up _ PHP Tutorial

Php can be rounded up. Floor rounding: floatfloor (floatvalue) returns the next integer not greater than value and rounds the fractional part of value. The returned type of floor () is still floa.
Floor rounding method: 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.
Echo floor (4.3); // 4
Echo floor (9.999); // 9

Ceil: 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.
Echo ceil (4.3); // 5
Echo ceil (9.999); // 10

Round rounds the floating point number
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
Reference: http://www.jbxue.com/article/9282.html

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