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原字符串1,2,3,4,5,6, 去掉最后一个字符",",最终结果为1,2,3,4,5,6 代码如下:
$str = "1,2,3,4,5,6,"; $newstr = substr($str,0,strlen($str)-1); echo $newstr; //echo 1,2,3,4,5,6
系统自带的函数即可实现这样的效果,两种方法:
1) substr($str, 0, -1)
2)rtrim($str, ",")
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