如何更改数组键

Question

如何更改像我数组的键：

$arrData = array('key1'=>'data1', 'key2'=>'data2') 

到：

$arrData = array('newKey1'=>'data1', 'newKey2'=>'data2') 

我喜欢做withing单一的语句，如：

$arrData = changeKey(array('newKey1'=>'data1', 'newKey2'=>'data2')) 

Answer 1

$arrData['newKey1'] = $arrData['key1']; 
unset($arrData['key1']); 

[UPDATE]：

function changeKey($array, $newkey, $oldkey) 
{ 
     $array[$newkey] = $arrData[$oldkey]; 
     unset($array[$oldkey]); 
     return $array; 
} 

$array = changeKey($array, 'key1', 'key2');