如何用另一个数组中的键重新排序数组？

Question

根据另一个数组中的值重新排列数组的最佳方式是什么？要重新排序

阵：

Array 
(
    [0] => Array 
     (
      [full_name] => Graham Smith 
     ) 

    [1] => Array 
     (
      [full_name] => Gerry Jones 

     ) 

    [2] => Array 
     (
      [full_name] => Frank Brown 
     ) 

) 

订购数组：

(
    [0] => Jones 
    [1] => Brown 
    [2] => Smith 
) 

Answer 1

这里是一个非常幼稚的，直接的方式做你想做的

<?php 

$array = array(
    array("full_name" => "Jack"), 
    array("full_name" => "Bob"), 
    array("full_name" => "Graham Smith"), 
    array("full_name" => "Gerry Jones"), 
    array("full_name" => "Frank Brown") 
); 

$order = array(
    "Jones", 
    "Brown", 
    "Smith" 
); 

function findOrderPosition($term) { 
    global $order; 

    for ($i = 0; $i < sizeof($order); $i++) { 
     if ($term == $order[$i]) 
      return $i; 
    } 

    return -1; 
} 

usort($array, function($a, $b) { 
    //Get the last names here (checking only the last space delimited token). 
    $arra = explode(' ', $a['full_name']); 
    $arrb = explode(' ', $b['full_name']); 

    //Find the position in the $order array. 
    $posa = findOrderPosition($arra[sizeof($arra) - 1]); 
    $posb = findOrderPosition($arrb[sizeof($arrb) - 1]); 

    if ($posa == -1) { 
     return 1; //Couldn't find item $a in the order array, so we want to move $b ahead of it. 
    } 

    if ($posb == -1) { 
     return -1; //Couldn't find item $b in the order array, so we want to move it to the bottom of the array. 
    } 

    if ($posa == $posb) { 
     return 0; //Don't move the item up or down if they are equal. 
    } 

    return $posa > $posb ? 1 : -1; //If position of $a is greater than $b then we want to move $a up, otherwise, move it down. 
}); 

print_r($array); 

输出：

Array 
(
    [0] => Array 
     (
      [full_name] => Gerry Jones 
     ) 

    [1] => Array 
     (
      [full_name] => Frank Brown 
     ) 

    [2] => Array 
     (
      [full_name] => Graham Smith 
     ) 

    [3] => Array 
     (
      [full_name] => Jack 
     ) 

    [4] => Array 
     (
      [full_name] => Bob 
     ) 

) 

Answer 2

我发现这个解决方案更容易理解，但我不知道哪个解决方案性能最好。

$array = array(
    array("full_name" => "Jack"), 
    array("full_name" => "Bob"), 
    array("full_name" => "Graham Smith"), 
    array("full_name" => "Gerry Jones"), 
    array("full_name" => "Frank Brown") 
); 

$order = array(
    "Jones", 
    "Brown", 
    "Smith" 
); 

$array_ordered = array(); 
$x = 0; 
foreach ($order as &$find) { 
    foreach ($array as $key => $row) { 
     $pos = strpos($row['full_name'], $find); 
     if ($pos) { 
      $array_ordered[$x] = $array[$key]; 
     } 
    } 
    $x++; 
} 
print_r($array_ordered);