$d = array(
0 => array(
'a' => string 'Days_3' (length=6)
'b' => string '3 Days' (length=6)
)
1 => array(
'a' => string 'Days_7' (length=6)
'b' => string '7 Days' (length=6)
)
2 => array(
'a' => string 'Days_14' (length=7)
'b' => string '14 Days' (length=7)
)
3 => array(
'a' => string 'Days_30' (length=7)
'b' => string '30 Days' (length=7)
)
4 => array(
'a' => string 'Days_60' (length=7)
'b' => string '60 Days' (length=7)
));
foreach($d as $v)
{
echo ltrim($v['a'],"Days_").",";
}
输出的 3,7,14,3,60, ,现在用什么方法能把最后一个","去掉,结果:3,7,14,3,60
$ch = '';
foreach($d as $v)
{
echo $ch . ltrim($v['a'],"Days_");
$ch = ',';
}
foreach($d as $v) {
if($v < (count($d)-1))
echo ltrim($v['a'],"Days_").",";
else
echo ltrim($v['a'],"Days_");
}