Question

对于某些范围，我的数组会多次返回数据，对于第二个示例中通过foreach过滤后的不同数组，该帖子仅包含1个唯一链接，因此其余链接根本不存在，应该打印只是来自image_1的数据，这就是PHP代码。

$imagecounter = 1;
foreach ($html2->find('.post img') as $source) {    
    $link = $source->src;
    if (strpos($link, 'https://www.example.com/wp-content/uploads/') !== false) { 
        $data['image_'.$imagecounter++.''] = $link;
    } 
}

这是数组。

Array
(
    [url] => https://www.example.com/something-with-data/
    [featured_image] => https://www.example.com/wp-content/uploads/2018/11/something-1.jpg
    [name] => Main Categories
    [image_1] => https://www.example.com/wp-content/uploads/2018/11/something-11.jpg
    [image_2] => https://www.example.com/wp-content/uploads/2018/10/something-1.jpg
    [image_3] => https://www.example.com/wp-content/uploads/2018/10/something-1.png
    [image_4] => https://www.example.com/wp-content/uploads/2018/10/something-2.jpg
    [image_5] => https://www.example.com/wp-content/uploads/2018/11/something-3.jpg
    [image_6] => https://www.example.com/wp-content/uploads/2018/11/something-4.jpg
    [image_7] => https://www.example.com/wp-content/uploads/2018/11/something-5.jpg
    [image_8] => https://www.example.com/wp-content/uploads/2018/11/something-6.jpg
    [image_9] => https://www.example.com/wp-content/uploads/2018/11/something-7.jpg
    [image_10] => https://www.example.com/wp-content/uploads/2018/11/something-8.jpg
    [image_11] => https://www.example.com/wp-content/uploads/2018/11/something-9.jpg
)

Array
(
    [url] => https://www.example.com/a-completely-different-post
    [featured_image] => https://www.example.com/wp-content/uploads/2018/10/UmekRLrlwK8.jpg
    [name] => Main Categories
    [image_1] => https://www.example.com/wp-content/uploads/2018/10/UmekRLrlwK8.jpg (THIS IS FROM THE NEW ITERATION)
    [image_2] => https://www.example.com/wp-content/uploads/2018/10/something-1.jpg
    [image_3] => https://www.example.com/wp-content/uploads/2018/10/something-1.png
    [image_4] => https://www.example.com/wp-content/uploads/2018/10/something-2.jpg
    [image_5] => https://www.example.com/wp-content/uploads/2018/10/something-3.jpg
    [image_6] => https://www.example.com/wp-content/uploads/2018/10/something-4.jpg
    [image_7] => https://www.example.com/wp-content/uploads/2018/10/something-5.jpg
    [image_8] => https://www.example.com/wp-content/uploads/2018/10/something-6.jpg
    [image_9] => https://www.example.com/wp-content/uploads/2018/10/something-7.jpg
    [image_10] => https://www.example.com/wp-content/uploads/2018/10/something-8.jpg
    [image_11] => https://www.example.com/wp-content/uploads/2018/10/something-9.jpg
    [image_12] => https://www.example.com/wp-content/uploads/2018/10/something-10.jpg
)

Answer 1

从一个空的$data数组开始。

$data = [];
$imagecounter = 1;
foreach ($html2->find('.post img') as $source) {    
    $link = $source->src;
    if (strpos($link, 'https://www.example.com/wp-content/uploads/') !== false) { 
        $data['image_'.$imagecounter++.''] = $link;
    } 
}

如果您需要存储多组$data，则可以将每个新的$data批次存储在父数组中。

foreach ($htmls as $html2) {
    $data = [];
    $imagecounter = 1;
    foreach ($html2->find('.post img') as $source) {    
        $link = $source->src;
        if (strpos($link, 'https://www.example.com/wp-content/uploads/') !== false) { 
            $data['image_'.$imagecounter++.''] = $link;
        } 
    }
    $result[] = $data;
}

Answer 2

如果我对，您想从阵列中过滤出重复的链接，则可以这样做。

您可以阅读有关array_unique

的信息

$imagecounter = 1;
foreach ($html2->find('.post img') as $source) {    
    $link = $source->src;
    if (strpos($link, 'https://www.example.com/wp-content/uploads/') !== false) { 
        $data['image_'.$imagecounter++.''] = $link;
    } 
}

$data = array_unique($data);
$imagecounter = 1;
foreach ($data as $link) {    //this loop is here to reset the key value so it increments 1 by 1.
    $data['image_'.$imagecounter++.''] = $link;
}

数组返回上一次迭代的图像

2 个答案: