通过相交键合并两个平面关联数组，形成索引数组的关联数组

Question

我有两个数据数组：

array(2) {
  ["12:15"]=>
  string(84) "http://form.horseracing.betfair.com/horse-racing/010108/Catterick_Bridge-GB-Cat/1215"
  ["12:20"]=>
  string(77) "http://form.horseracing.betfair.com/horse-racing/010108/Southwell-GB-Sou/1220"
}

和

array(2) {
  ["12:15"]=>
  string(90) "http://www.racingpost.com/horses/result_home.sd?race_id=446323&r_date=2008-01-01&popup=yes"
  ["12:20"]=>
  string(90) "http://www.racingpost.com/horses/result_home.sd?race_id=446250&r_date=2008-01-01&popup=yes"
}

我想根据时间合并这些，所以我最终得到一个值数组，其中两个数组中的时间仅匹配。

array(2) {
  ["12:15"]=>
  array(2) {
    [0]=>
    string(84) "http://form.horseracing.betfair.com/horse-racing/010108/Catterick_Bridge-GB-Cat/1215"
    [1]=>
    string(90) "http://www.racingpost.com/horses/result_home.sd?race_id=446323&r_date=2008-01-01&popup=yes"
  }
  ["12:20"]=>
  array(2) {
    [0]=>
    string(77) "http://form.horseracing.betfair.com/horse-racing/010108/Southwell-GB-Sou/1220"
    [1]=>
    string(90) "http://www.racingpost.com/horses/result_home.sd?race_id=446250&r_date=2008-01-01&popup=yes"
  }
}

Answer 1

下面的做法不会骗人吗？

$arr1 = array('time' => '14:00', 'rp' => 'blah');
$arr2 = array('time' => '14:00', 'bf' => 'yadda');

if ($arr1['time'] === $arr2['time']) {
    $mergedArray = array_merge($arr1, $arr2);
}

Answer 2

$result = array();
foreach ($all_arrays as $a) {
  if (!isset($result[$a["time"]])) {
    $result[$a["time"]] = array();
  }
  $result[$a["time"]] = array_merge($result[$a["time"]], $a);
}
$result = array_values($result);

Answer 3

我假设您有任意数量的这些时间数组。像这样存储数组可能是个好主意：

$times = array(
   '14:00' => array(...),
   '15:00' => array(...),
   etc...
);


$temp = array();
foreach($time_arrays as $time_array) {
    if(isset($temp[$time_array['time'])) {
      $temp[$time_array['time'] = array_merge(temp[$time_array['time'], $time_array);
    }
    else {
      $temp[$time_array['time'] = $time_array;
    }
}

Answer 4

$arr1 = array('time' => '14:00', 'rp' => 'blah');
$arr2 = array('time' => '14:00', 'bf' => 'yadda');
$arr3 = $arr1 + $arr2 ;

var_dump( $arr3 ) ;

给予

array
  'time' => string '14:00' (length=5)
  'rp' => string 'blah' (length=4)
  'bf' => string 'yadda' (length=5)

Answer 5

结合使用提供的答案和一些额外的 Google foo，使用以下方法解决了这个问题：

$c = array_merge_recursive($a, $b);