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This article mainly introduces php how to judge whether there is a decimal point related knowledge, the content is detailed and easy to understand, the operation is simple and fast, has a certain reference value, I believe everyone after reading this php how to judge whether there is a decimal point article will have a harvest, let's take a look.

Php's method of judging whether there is a decimal point: 1. Use "strpos (numeric string,'.')" Syntax, if you return the position where the decimal point first appears in the string, there is a decimal point; 2. Use "strrpos (numeric string,'.')" Statement, if it returns the position where the decimal point last appeared in the string.

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

Php's method of judging whether there is a decimal point or not

Method 1: use the strpos () function

Use the strpos () function to get the position of the decimal point in the string for the first time, syntax:

Strpos (numeric string,'.')

There is if the location is returned, but not if FALSE is returned.

Example:

Method 2: use the strrpos () function

Use the strrpos () function to get the position of the last occurrence of the decimal point in the string, syntax:

Strrpos (numeric string,'.')

There is if the location is returned, but not if FALSE is returned.

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