如何删除字符串末尾的逗号? [英] how do i remove a comma off the end of a string?

问题描述

我想删除字符串末尾的逗号.现在我正在使用

I want to remove the comma off the end of a string. As it is now i am using

$string = substr($string,0,-1);

但是只会删除字符串的最后一个字符.我正在动态添加字符串，因此有时字符串末尾没有逗号.如果字符串末尾有逗号，我如何让PHP从字符串末尾删除逗号?

but that only removes the last character of the string. I am adding the string dynamically, so sometimes there is no comma at the end of the string. How can I have PHP remove the comma off the end of the string if there is one at the end of it?

推荐答案

$string = rtrim($string, ',');

rtrim此处的文档

Docs for rtrim here

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