php数组问题

Question

$array[0] = array('ip'=>"192.168.1.5","iplong"=>33333);
$array[1] = array('ip'=>"192.168.1.6","iplong"=>555455);
$array[2] = array('ip'=>"192.168.1.5","iplong"=>45678);$array这个数组 如何合并成下面的数组?$array[0] = array('ip'=>"192.168.1.5","iplong"=>"33333,45678");
$array[1] = array('ip'=>"192.168.1.6","iplong"=>555455);

Answer 1

$array[0] = array('ip'=>"192.168.1.5","iplong"=>33333);
$array[1] = array('ip'=>"192.168.1.6","iplong"=>555455);
$array[2] = array('ip'=>"192.168.1.5","iplong"=>45678);
$hash = array();
foreach( $array as $k=>$v)
{
if(isset($hash[$v['ip']]))
{
$array[$hash[$v['ip']]]["iplong"]  .= ",".$v['iplong'];
unset( $array[$k] );continue;
}
$hash[$v['ip']] = $k;
}
print_r($array);

Answer 2

如果数组从数据库出来的,可以用 group_contact拼接iplong字段

Answer 3

$array[0] = array('ip'=>"192.168.1.5","iplong"=>33333);
$array[1] = array('ip'=>"192.168.1.6","iplong"=>555455);
$array[2] = array('ip'=>"192.168.1.5","iplong"=>45678);$last=$array[2]["iplong"];
unset($array[2]);
$array[0]["iplong"]=$array[0]["iplong"].",".$last;
print_r($array);