菜鸟提问，可惜没有分数了，大侠帮下啊？？？？？

[uuimflyo]

foreach( $groupArr as $val)
{
echo "$val,";
}

打印这个数组，如何让最后一个值后不加 ","

5,5,6,6,4,7,1,1,1,3,3, => 5,5,6,6,4,7,1,1,1,3,3

[Aylazhang]

echo join(",",$groupArr);

[bcc1o]

implode可以不

[uuimflyo]

很吃惊，我要背手册呀！！！

我太菜了！！！！！