php - 如何在 MySQL IN 语句中的内爆数组的字符串周围添加撇号？

Answer 1

array_map() lets you call a function on every element of an array.

$tag_array = array_map ( function($var) {
  return "'" . mysql_real_escape_string($var) . "'";
}, $tag_array );

But I suggest you use prepared statements (PDO or mysqli instead of the soon deprecated mysql_ functions).

Answer 2

Update

Misread the earlier question.

You have to escape each individual item in your array before you use it in the query:

function apply_quotes($item)
{
    return "'" . mysql_real_escape_string($item) . "'";
}

$list = array('3D', '瑪丹娜','電影','情報','大獨裁');

$list = array_map('apply_quotes', $list);

Then, to construct the query:

$query = "select * FROM news WHERE upordown = 1 AND tagkey IN (" . 
    join(',', $list) . 
    ") AND id <> $id ORDER BY udate DESC";

If all your items are inside a string instead of an array, you have to turn it into an array first:

$list = explode(',', '3D,瑪丹娜,電影,情報,大獨裁');

I'm assuming that you're using mysql_ functions; if not, let me know :)

Answer 3

Your question is not clear, but try like this ;

$tag_array = array($line["tagkey"]);
$tag_str = implode(" ", array($line["tagkey"]));
echo $tag_str;
$query = "select * FROM news WHERE upordown = 1 AND tagkey IN ('".$tag_str."') AND id <> '".$id."' ORDER BY udate DESC ";