How to remove the trailing 0 from decimals in php

php method to remove the trailing 0 from a decimal: 1. Use the " " operator to add 0 directly, for example "'100.00' 0"; 2. Use the floatval() function to convert to a floating point type; 3. Use rtrim() function; 4. Use the preg_replace() function with the regular expression "/[.]$/".

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

Today I will introduce several ways to remove the 0 at the end of the decimal point Method:

例如：100.00、100.01、100.10
得到值：100、100.01、100.1

Method 1.

Use the " " operator and add 0 directly, because PHP is a weak type and can directly perform mathematical operations and convert it into a number.

echo '100.00' + 0;
echo '100.01' + 0;
echo '100.10' + 0;

// 结果
100
100.01
100.1

Method 2,

Use floatval() to convert to floating point type.

echo floatval('100.00');
echo floatval('100.01');
echo floatval('100.10');

// 结果
100
100.01
100.1

Method 3.

Use the rtrim() function.

echo rtrim(rtrim('100.00', '0'), '.');
echo rtrim(rtrim('100.01', '0'), '.');
echo rtrim(rtrim('100.10', '0'), '.');

// 结果
100
100.01
100.1

Method 4.

Use regular expressions.

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

echo preg_replace('/[.]$/', '', preg_replace('/0+$/', '', '100.00'));
echo preg_replace('/[.]$/', '', preg_replace('/0+$/', '', '100.01'));
echo preg_replace('/[.]$/', '', preg_replace('/0+$/', '', '100.10'));

// 结果
100
100.01
100.1

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