PHP Decimal Rounding of floating-point numbers, PHP division takes integers

If we use the "/" operator for division, we get a decimal value if we encounter a situation that cannot be done. What if I only want to get the integer part?

1.round-rounding of floating-point numbers

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).
Example #1 Round () example

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2. <?php
4. Echo round (3.4); //3
6. Echo round (3.5); //4
8. Echo round (3.6); //4
10. Echo Round (3.6, 0); //4
12. Echo Round (1.95583, 2); //1.96
14. Echo Round (1241757,-3); //1242000
16. Echo Round (5.045, 2); //5.05
18. Echo Round (5.055, 2); //5.06
20. ?>

Note:php does not correctly handle strings that resemble "12,300.2" by default. See string conversions to numeric values.

2.ceil-into a method rounding (rounding up)

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.
Example #1 ceil () example

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1. <?php
2. echo ceil (4.3); //5
3. echo ceil (9.999); //Ten
4. ?>

3.floor-rounding (rounding down)

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.
Example #1 Floor () example

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1. <?php
2. echo floor (4.3); //4
3. echo Floor (9.999); //9
4. ?>

PHP Decimal Rounding of floating-point numbers, PHP division takes integers