如何修剪数组格式？

Question

我必须找到两个数组之间的区别，并将其存储在第三个数组中。

这就是我为此所做的

$newEmails=array_diff($Emails_1, $Emails_2);  

现在的问题是$Emails_1格式为->

  array(1) { [0] => string(20) "tester@xyz.com" }

和

$Emails_2采用这种格式->

array(1) { [0] => array(1) { 'email' => string(20) "tester@xyz.com" } }

我应该怎么做$Emails_2 ，所以它进来相同的格式为$Emails_1

PS：我无法篡改$Emails_1 ，只能更改$Emails_2

Answer 1

你可以在比较之前做到这一点

$EmailTemp=$Emails_2[0]["email"];
$Emails_2=array();
$Emails_2[0]=$EmailTemp;

Answer 2

$Emails_1 is in this format -> array(1) { [0] => string(20) "tester@xyz.com" }

$Emails_2 comes in this format -> array(1) { [0] => array(1) { 'email' => string(20) "tester@xyz.com" } }

选项1：为什么不先删除数组中的字符串，

$email1 = $Emails_1[0];

$email2 = $Emails_2[0]['email'];

选项2：使array_difference（..）迭代，

function array_difference($currentEmails, $comingEmails)
{
    $newEmails = new Array();

    for ($comingEmails as $p)
    {
        if (!in_array($p['email'], $currentEmails))
        {
            $newEmails[]=$p['email'];
        }
    }

    return $newEmails;
}

Answer 3

$temp = array();
foreach($Emails_2 as $key => $value){
    $temp[$key] = $value['email'];
}
$Emails_2 = $temp;