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
{
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
调试欢乐多
最后执行一个substr 去除最后一个 ‘ , ’