markdown 将PDO与IN子句一起使用

Posted 2021-05-05

### Using PDO with IN clause array
PDO is not good with such things. You need to create a string with question marks dynamically and insert into query.

 ```
$in  = str_repeat('?,', count($in_array) - 1) . '?';
$sql = "SELECT * FROM my_table WHERE my_value IN ($in)";
$stm = $db->prepare($sql);
$stm->execute($in_array);
$data = $stm->fetchAll();
```

[More](https://stackoverflow.com/questions/14767530/php-using-pdo-with-in-clause-array)