array_diff &重新编号数字键

发布于 2024-08-23 09:03:52 字数 291 浏览 11 评论 0原文

(I'm a beginner)

我的脚本相当广泛地使用了该标准

$c = 0;
$t = count($array);

while ($c < $t) {
  $blah = $array[$c];
  ++$c;
}

。但我刚刚遇到了一种情况,我还需要 array_diff ,它打破了这一切,因为现在数字键有间隙。我到处都收到未定义的偏移量错误。

如何重置数组的数字键?数组中对象的顺序无关。

(I'm a beginner)

My script uses the standard

$c = 0;
$t = count($array);

while ($c < $t) {
  $blah = $array[$c];
  ++$c;
}

rather extensively. But I just ran into a situation where I also need array_diff and it breaks that all to hell because now the numeric keys have gaps. I'm getting Undefined offset errors all over the place.

How do I reset the numeric keys of an array? The order of the objects in the array is irrelevant.

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评论(3

娇柔作态 2024-08-30 09:03:52

要重置键,您可以使用 array_values()

$array = array_values($array);

To reset the keys, you can use array_values():

$array = array_values($array);
苍景流年 2024-08-30 09:03:52

您不需要重置数组的键:您必须改变您处理数组的方式。

您应该使用 foreach 循环,而不是使用 while 循环并通过索引访问数组元素,它只会从数组中获取元素:

foreach ($array as $key => $value) {
    // $key contains the index of the current element
    // $value contains the value of the current element
}

You don't need to reset the keys of you array : you have to change the way you are going through it.

Instead of using a while loop and accessing the array elemnts by index, you should use a foreach loop, which will only get you elements from the array :

foreach ($array as $key => $value) {
    // $key contains the index of the current element
    // $value contains the value of the current element
}
我喜欢麦丽素 2024-08-30 09:03:52

谢谢塔图。

对于lulz,我将与您分享我在等待明智答案时使用的以下白痴黑客:

$badArray = array_diff($allData, $myData);

$string = implode(",",$badArray);

$dump = explode(",",$string);

$goodArray = $dump;

有效。让我感觉很脏,但它有效。

Thank you Tatu.

For the lulz, I will share with you the following idiot hack I used while waiting for a sensible answer:

$badArray = array_diff($allData, $myData);

$string = implode(",",$badArray);

$dump = explode(",",$string);

$goodArray = $dump;

worked. Made me feel all dirty, but it worked.

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