存储重复的数组元素

debugcn 发表于 Dev

弗拉德·安德烈（Vlad Andrei）

我拼命地试图解决以下问题：在一系列句子/新闻标题中，我试图找到非常相似的句子（共有3个或4个单词），然后将它们放入一个新的数组中。因此，对于此原始数组/列表：

'Title1: Hackers expose trove of snagged Snapchat images',
'Title2: New Jersey officials order symptom-less NBC News crew into Ebola quarantine',
'Title3: Family says goodbye at funeral for 16-year-old',
'Title4: New Jersey officials talk about Ebola quarantine',
'Title5: New Far Cry 4 Trailer Welcomes You to Kyrat Lowlands',
'Title6: Hackers expose Snapchat images'

结果应为：

Array
(
    [0] => Title1: Hackers expose trove of snagged Snapchat images
    [1] => Array
        (
            [duplicate] => Title6: Hackers expose Snapchat images
        )

    [2] => Title2: New Jersey officials order symptom-less NBC News crew into Ebola quarantine
    [3] => Array
        (
            [duplicate] => Title4: New Jersey officials talk about Ebola quarantine
        )
    [4] => Title3: Family says goodbye at funeral for 16-year-old
    [5] => Title5: New Far Cry 4 Trailer Welcomes You to Kyrat Lowlands
)

这是我的代码：

    $titles = array(
    'Title1: Hackers expose trove of snagged Snapchat images',
    'Title2: New Jersey officials order symptom-less NBC News crew into Ebola quarantine',
    'Title3: Family says goodbye at funeral for 16-year-old',
    'Title4: New Jersey officials talk about Ebola quarantine',
    'Title5: New Far Cry 4 Trailer Welcomes You to Kyrat Lowlands',
    'Title6: Hackers expose Snapchat images'
    );
$z = 1;
foreach ($titles as $feed)
{
    $feed_A = explode(' ', $feed);
    for ($i=$z; $i<count($titles); $i++)
    {
        $feed_B = explode(' ', $titles[$i]);
        $intersect_A_B = array_intersect($feed_A, $feed_B);
        if(count($intersect_A_B)>3)
        {
            $titluri[] = $feed;
            $titluri[]['duplicate'] = $titles[$i]; 
        }
        else 
        {
            $titluri[] = $feed;
        }
    }
    $z++;
}

它输出此结果（笨拙，但稍微符合所需的结果）：

Array
(
    [0] => Title1: Hackers expose trove of snagged Snapchat images
    [1] => Title1: Hackers expose trove of snagged Snapchat images
    [2] => Title1: Hackers expose trove of snagged Snapchat images
    [3] => Title1: Hackers expose trove of snagged Snapchat images
    [4] => Title1: Hackers expose trove of snagged Snapchat images
    [5] => Array
        (
            [duplicate] => Title6: Hackers expose Snapchat images
        )

    [6] => Title2: New Jersey officials order symptom-less NBC News crew into Ebola quarantine
    [7] => Title2: New Jersey officials order symptom-less NBC News crew into Ebola quarantine
    [8] => Array
        (
            [duplicate] => Title4: New Jersey officials talk about Ebola quarantine
        )

    [9] => Title2: New Jersey officials order symptom-less NBC News crew into Ebola quarantine
    [10] => Title2: New Jersey officials order symptom-less NBC News crew into Ebola quarantine
    [11] => Title3: Family says goodbye at funeral for 16-year-old
    [12] => Title3: Family says goodbye at funeral for 16-year-old
    [13] => Title3: Family says goodbye at funeral for 16-year-old
    [14] => Title4: New Jersey officials talk about Ebola quarantine
    [15] => Title4: New Jersey officials talk about Ebola quarantine
    [16] => Title5: New Far Cry 4 Trailer Welcomes You to Kyrat Lowlands
)

我们欢迎所有的建议！

奥尔本·波默雷特（Alban Pommeret）

这是我的解决方案，受@DomWeldon启发，没有重复项：

 <?php
$titles = array(
    'Title1: Hackers expose trove of snagged Snapchat images',
    'Title2: New Jersey officials order symptom-less NBC News crew into Ebola quarantine',
    'Title3: Family says goodbye at funeral for 16-year-old',
    'Title4: New Jersey officials talk about Ebola quarantine',
    'Title5: New Far Cry 4 Trailer Welcomes You to Kyrat Lowlands',
    'Title6: Hackers expose Snapchat images'
);
$titluri    =   array(); // unless it's declared elsewhere
$duplicateTitles = array();
// loop through each line of the array
foreach ($titles as $key => $originalFeed)
{
    if(!in_array($key, $duplicateTitles)){
        $titluri[] = $originalFeed; // all feeds are listed in the new array
        $feed_A = explode(' ', $originalFeed);
        foreach ($titles as $newKey => $comparisonFeed)
        {
            // iterate through the array again and see if they intersect
            if ($key != $newKey) { // but don't compare same line against eachother!
                $feed_B = explode(' ', $comparisonFeed);
                $intersect_A_B = array_intersect($feed_A, $feed_B);
                // do they share three words?
                if(count($intersect_A_B)>3)
                {
                    // yes, add a diplicate entry
                    $titluri[]['duplicate'] = $comparisonFeed;
                    $duplicateTitles[] = $newKey;
                }
            }
        }
    }
}

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