如何使用自定义或用户定义的标准在PHP中对数组进行合并和排序？

Question

我有两个array：

$data1 = array( 
     (0) => array("level" => 1, "id" => 1, "index" => 1, "amount" => 50000), 
     (1) => array("level" => 1, "id" => 2, "index" => 1, "amount" => 40000), 
     (2) => array("level" => 1, "id" => 3, "index" => 1, "amount" => 0)); 

$data2 = array( 
     (0) => array("level" => 2, "id" => 1, "index" => 1, "amount" => 30000), 
     (1) => array("level" => 2, "id" => 1, "index" => 2, "amount" => 20000), 
     (2) => array("level" => 2, "id" => 2, "index" => 1, "amount" => 15000), 
     (3) => array("level" => 2, "id" => 2, "index" => 2, "amount" => 25000), 
     (4) => array("level" => 2, "id" => 3, "index" => 1, "amount" => 0)); 

我想这些数组合并成一个数组，其结果是这样的：

$expected = array(
     (0) => array("level" => 1, "id" => 1, "index" => 1, "amount" => 50000), 
     (1) => array("level" => 2, "id" => 1, "index" => 1, "amount" => 30000), 
     (2) => array("level" => 2, "id" => 1, "index" => 2, "amount" => 20000), 
     (3) => array("level" => 1, "id" => 2, "index" => 1, "amount" => 40000), 
     (4) => array("level" => 2, "id" => 2, "index" => 1, "amount" => 15000), 
     (5) => array("level" => 2, "id" => 2, "index" => 2, "amount" => 25000)); 

我试着使用array_merge_recursive：

$try = array_merge_recursive($data1, $data2); 

但结果是这样的：

$try = array(
     (0) => array("level" => 1, "id" => 1, "index" => 1, "amount" => 50000), 
     (1) => array("level" => 1, "id" => 2, "index" => 1, "amount" => 40000), 
     (3) => array("level" => 1, "id" => 3, "index" => 1, "amount" => 0), 
     (4) => array("level" => 2, "id" => 1, "index" => 1, "amount" => 30000), 
     (5) => array("level" => 2, "id" => 1, "index" => 2, "amount" => 20000),    
     (6) => array("level" => 2, "id" => 2, "index" => 1, "amount" => 15000), 
     (7) => array("level" => 2, "id" => 2, "index" => 2, "amount" => 25000), 
     (8) => array("level" => 2, "id" => 3, "index" => 1, "amount" => 0)); 

我有我的成绩标准：其中金额= 0

排序和order by ID，水平，指标

我读过

1. 删除阵列大约uasort和但我没有任何想法如何实现该功能来匹配我所需要的。该函数（uasort/usort）是否可以解决它或任何其他想法？请帮助我，谢谢！

Answer 1

$data = array_merge($data1, $data2); 
$data = array_filter($data, function ($d) { 
    return $d['amount'] != 0; 
}); 
usort($data, function ($a, $b) { 
    if ($a['id'] != $b['id'])  return $a['id'] - $b['id']; 
    if ($a['level'] != $b['level']) return $a['level'] - $b['level']; 
    else       return $a['index'] - $b['index']; 
}); 

注意：使用PHP 5.3+匿名函数语法。

Answer 2

这是否对你的工作：

 
$finalArr = array_merge($data1,$data2); 

foreach($finalArr as $key => $val) { 
    if(empty($val['amount'])) { 
     unset($finalArr[$key]); 
    } 
} 
echo "<pre>"; 
sort($finalArr); 
print_r($finalArr); 

希望它可以帮助的