PHP implements a two-dimensional array to sort by a column _php tips

The example in this article tells you how PHP implements a two-dimensional array to sort by a column. Share to everyone for your reference, specific as follows:

* * The two-dimensional array is sorted by a column * Array_multisort ($arr 1, $arr 2) * Manual examples are as follows */$data [] = Array (' volume ' =>, ' Edition ' => 2);
$data [] = Array (' volume ' =>, ' edition ' => 1);
$data [] = Array (' volume ' =>, ' Edition ' => 6);
$data [] = Array (' volume ' =>, ' Edition ' => 2);
$data [] = Array (' volume ' =>, ' Edition ' => 6);
$data [] = Array (' volume ' =>, ' edition ' => 7);
  Gets the list of columns foreach ($data as $key => $row) {$volume [$key] = $row [' volume '];
$edition [$key] = $row [' Edition ']; ///volume The data in descending order according to edition ascending order//$data as the last parameter, sorted by common key Array_multisort ($volume, Sort_desc, $edition, SORT_ASC,
$DATA); /*************************************//* From the example above, it is easy to see that the Array_multisort () function * is to order the columns of each two-dimensional array as a parameter * to achieve the order of the entire array * */*** /function Sigcol_arrsort ($data, $col, $type =sort_desc) {if (Is_array ($data)) {$i =0
    ;
        foreach ($data as $k => $v) {if (Key_exists ($col, $v)) {$arr [$i] = $v [$col];
      $i + +; }else{
        Continue
  }}else{return false;
  } array_multisort ($arr, $type, $data);
return $data;
} print_r (Sigcol_arrsort ($data, ' edition ', Sort_desc));
 /* The principle is: The new array of the original two-dimensional array 2 array (' Volume ' =>, ' Edition ' => 2);
 1 Array (' volume ' =>, ' edition ' => 1);
 6 Array (' Volume ' =>, ' Edition ' => 6);
 2 Array (' Volume ' =>, ' Edition ' => 2);
 6 Array (' Volume ' =>, ' Edition ' => 6);
7 Array (' Volume ' =>, ' edition ' => 7);

 Each row of the two arrays is locked together, and once the new array is in order, the two-dimensional array of each row is followed by the order of the transformation, that is, the new array is the same as the reference in the query clause.

Run Result:

Array
(
  [0] => array
    (
      [volume] =>
      [Edition] => 7
    )
  [1] => array
    (
      [Volume] =>
      [Edition] => 6
  [2] => Array
    (
      [Volume] => (
      edition) => 6
    )
  [3] => array
    (
      [volume] =>
      [Edition] => 2
    )
  [4] => array
    ( C24/>[volume] =>
      [Edition] => 2
  [5] => Array
    (
      [Volume] => (
      edition) => 1
    )
)

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