将整数与多维数组进行比较

Question

我有下面的数组和$num，我试图检查每个元素的$num是否等于或在from和to的范围内。如果条件为true，则返回该数组的对应或键，并停止进一步比较。我能够做到这一点使用array_walk，但不能阻止进一步的比较

Array 
(
    [_1395216158966_966] => Array 
     (
      [from] => 1 
      [to] => 3 
      [rate] => 10 
     ) 

    [_1395216219094_94] => Array 
     (
      [from] => 3 
      [to] => 6 
      [rate] => 15 
     ) 

    [_1395216219662_662] => Array 
     (
      [from] => 6 
      [to] => 9 
      [rate] => 20 
     ) 

) 

当前代码

array_walk($data, array($this, 'CalculateWeightCharge'), $weight) 

public function CalculateWeightCharge($data, $needle, $num) 
    { 

     if($num >= $data['from'] && $num <= $data['to']){ 
      return true; 
     } 

    } 

Answer 1

function fn($numbers, $num) 
{ 
    foreach($numbers as $key=>$val) 
    { 
     if($num >= $val["from"] && $num <= $val["to"]) 
     { 
      return $key; 
     } 
    } 

    return null; 
} 

Answer 2

function compare($array, $num) { 
    foreach ($array as $key => $value) { 
     if ($num >= $value['from'] && $num <= $value['to']) // any condition here 
      return $key; 
    } 
    return null; 
} 

Answer 3

下面是检查是否$num是每个码$array阵列：

$result = array_filter($array, function ($v) use($num) { 
    return $num >= $v['from'] && $num <= $v['to']; 
}) 
if (count($result) == count($array)) echo 'TRUE';