Question

我如何获得所需的输出？我想检查array1“entry_id”是否与array2“entry_id”

不同

我该怎么做？我尝试使用array_diff_key ..但它没有用

数组1

Array ( [0] => Array ( [entry_id] => 53242 [site_id] => 2 [channel_id] => 2 [author_id] => 5 [1] => Array ( [entry_id] => 76435 [site_id] => 8 [channel_id] => 8 [author_id] => 9

ARRAY2

Array ( [0] => Array ( [entry_id] => 89764 [site_id] => 1 [channel_id] => 1 [author_id] => 5  [1] => Array ( [entry_id] => 53242[site_id] => 7 [channel_id] => 9 [author_id] => 1

我想将array1和array2相互比较并获得所需的输出：

期望的输出：

   Array ( [0] => Array ( [entry_id] => 76434 [site_id] => 8 [channel_id] => 8 [author_id] => 9 [1] => Array ( [entry_id] => 76435 [site_id] => 8 [channel_id] => 8 [author_id] => 9

Answer 1

对于小尺寸的输入数组，基本上可以使用两个for循环来完成它。

示例代码（未经测试！）：

// $array1 and $array2 are the inputs
// $array3 is output
$array3=array();
// Keep track of what we have already found
$buff=array();
foreach($array1 as $a1){
    foreach($array2 as $a2){
        // Check for matching ids and is not already used
        if($a1['entry_id']==$a2['entry_id'] and !isset($buff[$a1['entry_id']])){
            $array3[]=$a1;
            $buff[$a1['entry_id']]=1;
        }
    }
}

print_r($array3); // Debug

编辑： OP想要相反，所以......

示例代码（已测试！）：

// 2 pass filter
// $array1 and $array2 are the inputs
$array1=array(
    array('entry_id'=>1,'t'=>"a1"),
    array('entry_id'=>2,'t'=>"b1"),
    array('entry_id'=>3,'t'=>"c1"),
);
$array2=array(
    array('entry_id'=>1,'t'=>"a2"),
    array('entry_id'=>2,'t'=>"b2"),
    array('entry_id'=>4,'t'=>"d2"),
);

// $array3 is output
$array3=array();
// Keep track of what we have already found
$buff=array();

foreach($array1 as $a1) $buff[$a1['entry_id']]=array(1,$a1);

foreach($array2 as $a2){
    if(isset($buff[$a2['entry_id']])){
            $buff[$a2['entry_id']]=array(2,$a2);
    }else{
            $buff[$a2['entry_id']]=array(1,$a2);
    }
}

foreach($buff as $k=>$v) if($v[0]==1) $array3[]=$v[1];

print_r($array3); // Debug

Answer 2

试试这个：

<?php
$arreglo1 = Array (
        Array (
            "entry_id" => 53242,
            "site_id" => 2,
            "channel_id" => 2,
            "author_id" => 1
        ),
        Array (
            "entry_id" => 76435,
            "site_id" => 8,
            "channel_id" => 8,
            "author_id" => 9,
        )
    );

    $arreglo2 = Array (
        Array (
            "entry_id" => 89764, 
            "site_id" => 1,
            "channel_id" => 1,
            "author_id" => 5
        ),
        Array (
            "entry_id" => 53242,
            "site_id" => 7,
            "channel_id" => 9,
            "author_id" => 1
            )
        );

     $cnt = 0;
     foreach($arreglo1 as $arr1) {
      foreach($arreglo2 as $arr2){
       if ($arr1["entry_id"] == $arr2["entry_id"]) {
         $agregarlo = FALSE;
         break;
       }
       else {
        $agregarlo = TRUE;
       } 
      }

      if ($agregarlo) {
       $resultado[$cnt] = $arr1;
      }
      $cnt++;
     }

     var_dump($resultado);
    ?>

给你这个：

array(1) { [1]=> array(4) { ["entry_id"]=> int(76435) ["site_id"]=> int(8) ["channel_id"]=> int(8) ["author_id"]=> int(9) } }

如果它没有出现在另一个数组中，我想要我的数组中的值

2 个答案: