PHP - 如何在索引中按值取消数组索引

问题描述：

I have an array of objects ($response) that looks like this:

Array
(
    [0] => stdClass Object
        (
            [CardNumber] => 5897853070424xxx
            [CardHolderName] => P Stoltz
            [CardHolderContactNumber] => 
            [CardHolderEmailAddress] => 
            [CardExpiryDate] => 2017-09-01T00:00:00
            [CardHolderTypeID] => 2
            [LastUsedDate] => 2017-05-25T00:00:00
        )
    [1] => stdClass Object
        (
            [CardNumber] => 589785304326xxx
            [CardHolderName] => J Stoltz
            [CardHolderContactNumber] => 
            [CardHolderEmailAddress] => 
            [CardExpiryDate] => 2017-09-01T00:00:00
            [CardHolderTypeID] => 2
            [LastUsedDate] => 2017-05-25T00:00:00
        )

)

Now, I need to unset the entire object where CardNumber != '589785304326xxx'

I have tried this:

$cardnumber = '5897853070424xxx'; 
    foreach( $response as $res )
    {
        if($res->CardNumber != $cardnumber)
        {
            unset($res);
        }
    }

This does nothing. Any suggestions?

我有一个对象数组（$ response），如下所示： p> Array （ [0] =＆gt; stdClass Object （ [CardNumber] =＆gt; 5897853070424xxx [CardHolderName] =＆gt; P Stoltz [CardHolderContactNumber] =＆gt; \ n [CardHolderEmailAddress] =＆gt; [CardExpiryDate] =＆gt; 2017-09-01T00：00：00 [CardHolderTypeID] =＆gt; 2 [LastUsedDate] =＆gt; 2017-05-25T00：00：00 ） [1] =＆gt; stdClass对象（ [CardNumber] =＆gt; 589785304326xxx [CardHolderName] =＆gt; J Stoltz [CardHolderContactNumber] =＆gt; [CardHolderEmailAddress] =＆gt; ; [CardExpiryDate] =＆gt; 2017-09-01T00：00：00 [CardHolderTypeID] =＆gt; 2 [LastUsedDate] =＆gt; 2017-05-25T00：00：00 ） \ n） code> pre>

现在，我需要取消设置CardNumber！='5的整个对象 89785304326xxx' p>


我试过这个： p> 
 
 
  $ cardnumber ='5897853070424xxx';  
 foreach（$ response as $ res）
 {
 if（$ res-＆gt; CardNumber！= $ cardnumber）
 {
 unset（$ res）; 
} 
} 
  code  >  pre> 
 
 这没有任何作用。 有什么建议吗？ p> 
  div>

答

What you have tried will only unset the current object in the loop. You need to do the following:

foreach($response as $key => $res) {
    if($res->CardNumber != $cardnumber) {
        unset($response[$key], $res);
        continue;
    }
}

答

Use unset() inside the loop.

eg:

unset('key value', 'your array name');

PHP - 如何在索引中按值取消数组索引

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