PHP字符过滤函数去除字符串最后一个逗号(rtrim)

发布时间：2020-05-24 16:31:14 所属栏目：PHP 来源：互联网

导读：PHP字符过滤函数去除字符串最后一个逗号,用php自带的函数比较容易解决

首先分别解释下,

trim过滤字符串两端,
rtrim过滤字符串尾部,=chop()
ltrim过滤字符串首部.

过滤字符串中键的咚咚就只能用str_replace咯.
举个例子说明下,

PHP代码
代码如下:$str = '123,333,234,';
echo rtrim($str,',');

rtrim实例代码2

代码如下:$text = "ttThese are a few words :) ... ";
$trimmed = rtrim($text);
// $trimmed = "ttThese are a few words :) ..."
$trimmed = rtrim($text," t.");
// $trimmed = "ttThese are a few words :)"
$clean = rtrim($binary,"x00..x1F");
// trim the ASCII control characters at the end of $binary
// (from 0 to 31 inclusive)
?>

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