如何在SQL中的where子句中使用数组值

Question

我有一个数组$rest_id有3个ID，但是当我做foreach并把它放在我的sql查询中时，我调试它时只出现一个值。 这是代码。

$ids = array();
foreach ($rest_id as $value) {
    $ids[] = $value->id;
    $nearest_rest = DB::select("SELECT *, (3956 * 2 * ASIN(SQRT( POWER(SIN(( 28.5812674 - lat) * pi()/180 / 2), 2) +COS( 28.5812674 * pi()/180) * COS(lat * pi()/180) * POWER(SIN(( 77.3181059 - lng) * pi()/180 / 2), 2) ))) as distance from restaurant_details where id In ('" . implode("','",$ids) . "') having distance order by distance asc limit 1"); 

     dd($nearest_rest);
}

Answer 1

我想你需要这样的东西，如果你想从3 ids中找到最近的餐馆：

$ids = array();
foreach ($rest_id as $value) {
    $ids[] = $value->id;
}

$nearest_rest = DB::select("SELECT *, (3956 * 2 * ASIN(SQRT( POWER(SIN(( 28.5812674 - lat) * pi()/180 / 2), 2) +COS( 28.5812674 * pi()/180) * COS(lat * pi()/180) * POWER(SIN(( 77.3181059 - lng) * pi()/180 / 2), 2) ))) as distance from restaurant_details where id In ('" . implode("','",$ids) . "') having distance order by distance asc limit 1"); 

dd($nearest_rest);

Answer 2

您需要使用$ids = implode(',',$ID)函数将数组转换为字符串。

然后，您可以在查询中使用where id in ($ids)中的where id in ($ids)