php 除了字符串
php 去掉字符串
今天项目中用到,去掉字符串中的最后一个字符
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 $newstr;
系统自带的函数也可实现这样的效果,两种方法:
1) substr($str, 0, -1)
2)rtrim($str, ",")

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