How to remove extra 0 after decimal point in php

Method: 1. Use "decimal 0"; 2. Use "floatval(decimal)"; 3. Use "rtrim(rtrim(decimal,'0'),'.')"; 4. Use "preg_replace('/[.]$/','',preg_replace('/0 $/','', decimal)".

This Tutorial operating environment: Windows 7 system, PHP 7.1 version, DELL G3 computer

Today we introduce several methods to remove the 0 at the end of the decimal point:

Method 1. Add directly 0

##Because PHP is a weak type, it can directly perform mathematical operations and convert them into numbers.

<?php
echo &#39;100.00&#39; + 0 ."<br>";
echo &#39;100.01000&#39; + 0 ."<br>";
echo &#39;100.10000&#39; + 0 ."<br>";
?>

Output result:

100
100.01
100.1

Method 2, use floatval() to convert to floating point

<?php
echo floatval(&#39;100.00&#39;)."<br>";
echo floatval(&#39;100.01000&#39;)."<br>";
echo floatval(&#39;100.10000&#39;)."<br>";
?>

Output result:

100
100.01
100.1

Method 3, use rtrim ()Function

<?php
echo rtrim(rtrim(&#39;100.00&#39;, &#39;0&#39;), &#39;.&#39;)."<br>";
echo rtrim(rtrim(&#39;100.01000&#39;, &#39;0&#39;), &#39;.&#39;)."<br>";
echo rtrim(rtrim(&#39;100.10000&#39;, &#39;0&#39;), &#39;.&#39;)."<br>";
?>

Output result:

100
100.01
100.1

Method 4. Use regular expression

正则表达式说明：
/0+$/  去掉末尾多余的0
/[.]$/ 去掉末尾的.

943305d0cdc8533a04f5034bb4fe0156";
echo preg_replace('/[.]$/', '', preg_replace('/0+$/', '', '100.1000'))."0c6dc11e160d3b678d68754cc175188a";
echo preg_replace('/[.]$/', '', preg_replace('/0+$/', '', '100.010203000'))."0c6dc11e160d3b678d68754cc175188a";
?>

Output results:

100
100.1
100.010203

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