PHP float function rounding example code

No rounding, only integers
floor function 2.1 = 2
2.6 = 2

Do not round floating point into 1
ceil function: 2.1 = 3
2.6 = 3
ceil(-3.14)=-3
ceil(9.99)=10

Rounding function: 2.1 = 2
2.6 = 3
round(1.9558 3, 2) =1.96

Conversion to integer

intval function 2.1 = 2
2.6 = 2
intval('abc')=0
intval('5bc')=5

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