How does php judge how many decimal places there are?

This article mainly introduces "how to judge the decimal places in php". In the daily operation, I believe that many people have doubts about how to judge the decimal places in php. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the doubts of "how to judge the decimal places in php". Next, please follow the editor to study!

There are several decimal places in php judgment: 1, using "strlen (substr ($num, strrpos ($num,'.) + 1)") sentence; 2, using "strlen (array_pop (explode ('.', $num))" statement.

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

Php's method of judging how many decimal places a number has

Method 1: with the help of strrpos (), substr (), strlen () functions

Output result:

five

Method 2: with the help of explod (), array_pop (), strlen () functions

Output result:

three

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