How to determine whether there is a decimal point in php

php method to determine whether there is a decimal point: 1. Use the "strpos(numeric string,'.')" syntax. If the position where the decimal point first appears in the string is returned, there is a decimal point; 2 , use the "strrpos(numeric string,'.')" statement, if the position of the last occurrence of the decimal point in the string is returned, then there is.

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

php to determine whether there is Decimal point method

Method 1: Use the strpos() function

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

strpos(数字字符串,'.')

If the position is returned, it is present, if FALSE is returned, there is no.

Example:

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
$nubs = 34123.456;
if (strpos($nubs, &#39;.&#39;) !== false) {
echo &#39;是小数，有小数点&#39;;
} else {
echo &#39;不是小数，没有小数点&#39;;
}
?>

Method 2: Use strrpos() function

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

strrpos(数字字符串,'.')

If the position is returned, it is present, if it returns FALSE, it is not.

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
$nubs = 34123;
if (strrpos($nubs, &#39;.&#39;) !== false) {
echo &#39;是小数，有小数点&#39;;
} else {
echo &#39;不是小数，没有小数点&#39;;
}
?>

Recommended learning: "PHP Video Tutorial"

The above is the detailed content of How to determine whether there is a decimal point in php. For more information, please follow other related articles on the PHP Chinese website!