通过 PDO 按关键字过滤 PHP

Question

我想知道是否有一种方法可以通过关键字匹配来过滤结果，如果有最多 2 个关键字，结果就会显示？

不久...我想通过使用关键字（$row['TAG']）来做"YOU MAY BE INTERESTING"...唯一的条件是所有关键字相似或不同到2个字。 TIA.

$words_tag=apple, 11128gb, mjvm2ll, air, macbook, 16ghz, i5250u,
notebook, laptop, mac, **- 10 keyword**

V $words_tag(2)=apple, air, macbook, 16ghz, i5250u, notebook, laptop, mac, -8/10 keywords

V $words_tag(3)= mjvm2ll, air, macbook, 16ghz, i5250u, notebook, laptop, mac, -8/10 keywords

X $words_tag(4)= mjvm2ll, air, 16ghz, i5250u, notebook, laptop, mac, -7/10 keywords

我的代码：

    $words_tag=$row['TAG'];
$arr = substr_count($words_tag, ",");

    //$words_tag=apple, 11128gb, mjvm2ll, air, macbook, 16ghz, i5250u, notebook, laptop, mac,

    $search = $words_tag; 
    $search = strtoupper($search);
    $search = strip_tags($search); 
    $search = trim($search);
    $words = explode(',', $search);
    $words_condition = array();
    $arguments = array();
    $i='1';
    foreach ($words as $word) {
        $words_condition[] = 'TAG LIKE ?';
        $arguments[] = '%'.$word.'%';
        $i++;
        if($i=> $arr-2) break();
    }

    $query = $db->prepare("SELECT * FROM `post` WHERE ".implode(" OR ", $words_condition)." ORDER BY ID DESC");

    $query->execute($arguments);   

    if($query->rowCount()=='0'){

    }else{
    echo 'YOU MAY BE INTSETENTING...';
    }

Answer 1

不要使用 OR 来组合 LIKE 条件，而是使用 +。匹配的时候条件是1，不匹配的时候是0，所以总数就是匹配的关键词个数。然后，您可以将此值与您对匹配关键字数量的限制进行比较。

$query = $db->prepare("SELECT * FROM `post` 
    WHERE ".implode(" + ", $words_condition)." BETWEEN 1 AND 2 
    ORDER BY ID DESC");

通过 PDO 按关键字过滤 PHP

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