php 删除一个数组中的某个值.兼容多维数组!

function array_remove_key($array, $keys) 
{ 
$num = count($keys); 
$num_last = $num - 1; 
$this_array_0 = &$array; 
$last_key = $keys[$num_last]; 
for ($i = 0; $i < $num_last; $i++) 
{ 
$this_key = $keys[$i]; 
$this_var_name = 'this_array_' . $i; 
$next_var_name = 'this_array_' . ($i + 1); 
if (!array_key_exists($this_key, $$this_var_name)) { 
break; 
} 
$$next_var_name = &${$this_var_name}[$this_key]; 
} 
unset(${$next_var_name}[$last_key]); 
return $array; 
}