How PHP implements Division

How PHP implements the entire division. What if I only want to get the integer part? Multiple functions are provided in the PHP mathematical function library for PHP to implement division.
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If we use the '/' operator to perform division operations, we will get a small value if we cannot perform division operations. What if I only want to get the integer part?
Multiple functions are provided in the PHP mathematical function library:
1. the round function rounds a floating point number.. This should best suit everyone's needs.

2. ceil function, which is rounded up by a method.

3. floor, the rounding method is used to get the integer, and the fractional part is removed.