我正在寻找一种在 foreach() 中获取 next 和 next+1 键/值对的方法.例如:
I am looking for a way to get the next and next+1 key/value pair in a foreach(). For example:
$a = array('leg1'=>'LA', 'leg2'=>'NY', 'leg3'=>'NY', 'leg4'=>'FL');
foreach($a AS $k => $v){
if($nextval == $v && $nextnextval == $v){
//staying put for next two legs
}
}
您无法以这种方式访问 next 和 next-next 值.
You can't access that way the next and next-next values.
但是你可以做类似的事情:
But you can do something similar:
$a = array('leg1'=>'LA', 'leg2'=>'NY', 'leg3'=>'NY', 'leg4'=>'FL');
$keys = array_keys($a);
foreach(array_keys($keys) AS $k ){
$this_value = $a[$keys[$k]];
$nextval = $a[$keys[$k+1]];
$nextnextval = $a[$keys[$k+2]];
if($nextval == $this_value && $nextnextval == $this_value){
//staying put for next two legs
}
}
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