3

我有两个大数组，大约有 1000 个键，并且每天都在增长。如何将这些数组按值合并为array1[]['uid']一个array2[][7]

请注意，正确的值可能是例如array1[45]['uid']和array2[155][7]或 array1[444]['uid']等array2[666][7]。

array1
    0 => 
    array
      'login' => string '104' (length=5)
      'uid' => string '1363861889.100' (length=14)
    1 => 
    array
      'login' => string '131' (length=5)
      'uid' => string '1363863722.126' (length=14)
    etc...

和另一个

array2
     0 => 
    array
      0 => string '2013' (length=4)
      1 => string '03' (length=2)
      2 => string '25' (length=2)
      3 => string '15' (length=2)
      4 => string '39' (length=2)
      5 => string '49' (length=2)
      6 => string 'anonymous' (length=9)
      7 => string '1363863722.126' (length=19)
    1 => 
    array
      0 => string '2013' (length=4)
      1 => string '03' (length=2)
      2 => string '25' (length=2)
      3 => string '12' (length=2)
      4 => string '39' (length=2)
      5 => string '42' (length=2)
      6 => string 'anonymous' (length=9)
      7 => string '1363861889.100' (length=19)
    etc...

array1[0]['uid']在这里array2[1][7] 我想得到相同的值：

 array
      0 => string '2013' (length=4)
      1 => string '03' (length=2)
      2 => string '25' (length=2)
      3 => string '12' (length=2)
      4 => string '39' (length=2)
      5 => string '42' (length=2)
      6 => string 'anonymous' (length=9)
      7 => string '1363861889.100' (length=19)
      'login' => string '104' (length=5)
      'uid' => string '1363861889.100' (length=14)
4

2 回答 2

2 
$array1_inverted = array();
foreach ($array1 as $subarray) {
  $array1_inverted[$subarray['uid']] = $subarray;
}
foreach ($array2 as &$element) {
  $array1_element = $array1_inverted[$element[7]];
  $element['uid'] = $array1_element['uid'];
  $element['login'] = $array1_element['login'];
}

演示

于 2013-03-26T17:14:27.593 回答
1 
foreach($array1 as $value)
{
  foreach($array2 as $value1)
  {
    if($value['uid'] == $value1[7])
  {
     $value1['uid'] = $value['uid'];
     $value1['login'] = $value['login'];
  }
 }
}

同时尝试一下，我会想到一些更好的选择

于 2013-03-26T17:13:54.033 回答