php如何去掉字符串最后一个逗号

php去掉字符串最后一个逗号的方法：使用函数rtrim过滤字符串尾部，代码为【$trimmed = "\t\tThese are a few words :) .."$str = '13,3';echo rtrim($str, ',')】。

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php去掉字符串最后一个逗号的方法：

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

$str = '123,333,234,'; echo rtrim($str, ','); rtrim实例代码2

代码如下:

<?php $text = "\t\tThese are a few words :) ...  "; $trimmed = rtrim($text); // $trimmed = "\t\tThese are a few words :) ..." $trimmed = rtrim($text, " \t."); // $trimmed = "\t\tThese 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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