格式显示问题

$ress = array ( 0 => array ( 0 => '237033AW0A', 'cust_no' => '237033AW0A', 1 => '4409', 'lotno' => '4409', 2 => 300, 'part_count' => 300, ), 1 => array ( 0 => '237033AW0A', 'cust_no' => '237033AW0A', 1 => '4410', 'lotno' => '4410', 2 => 141, 'part_count' => 75, ), )foreach($ress as $source)			{						if($source['part_count'] != 0)					{						$lotno_count = $source['lotno'].' * '.$source['part_count'];						echo $lotno_count.'<br />';					}			}

主要是加了
最后一行显示空格。如何修改可以把最后一行多的空格去除。谢谢！

回复讨论(解决方案)

$ress = array ( 0 => array ( 0 => '237033AW0A', 'cust_no' => '237033AW0A', 1 => '4409', 'lotno' => '4409', 2 => 300, 'part_count' => 300, ), 1 => array ( 0 => '237033AW0A', 'cust_no' => '237033AW0A', 1 => '4410', 'lotno' => '4410', 2 => 141, 'part_count' => 75, ), ); foreach($ress as $source) {     if($source['part_count'] != 0)  {    $lotno_count[] = $source['lotno'].' * '.$source['part_count'];  }}echo join('<br />', $lotno_count);

4409 * 300
4410 * 75

$ress = array ( 0 => array ( 0 => '237033AW0A', 'cust_no' => '237033AW0A', 1 => '4409', 'lotno' => '4409', 2 => 300, 'part_count' => 300, ), 1 => array ( 0 => '237033AW0A', 'cust_no' => '237033AW0A', 1 => '4410', 'lotno' => '4410', 2 => 141, 'part_count' => 75, ), ); foreach($ress as $source) {     if($source['part_count'] != 0)  {    $lotno_count[] = $source['lotno'].' * '.$source['part_count'];  }}echo join('<br />', $lotno_count);

4409 * 300
4410 * 75

如果变成这样呢？
foreach($ress as $source)
{
if($source['cust_no'] == '237033AW0A')
{
if($source['part_count'] != 0)
{
$lotno_count[] = $source['lotno'].' * '.$source['part_count'];
}
}
}

那有什么区别呢？
你不过只是在直接输出时多了最后的 

只要能判断出是最后一个就不需要缓存了