How to format a number?

How to format a number? For example, if I only want to get the number after the decimal point, it is 0.21951100. can I do this without using the explode function?

Reply to discussion (solution)

Convert to string type, and then use substring to extract digits after the decimal point.

Many methods

Just give one

$ A = "0.21951100"; echo substr ($ a, strpos ($ a, ".") + 1 );

21951100

When

$ A = 0.21951100; // at this time, $ a is a number type. // from here, is it possible to know that there are two zeros behind 0.219511?

The most powerful, direct str_replace to me, thank you.