php - 如何设置从MySQL数组获取多个值并检查数组键

Question

我正在尝试从 MySQL 数组获取多个值并检查数组键是否存在。

我有两个不同的表booking_info和ticket_details如果两个id相同，则从ticket_details获取值

function getSeatInfo()
{
    global $getseatinfo;
    $id = 1;
    $sql = "SELECT id FROM booking_info WHERE id = '". $id . "'"; 
    $sqlr = "SELECT * FROM ticket_details WHERE id = '". $$sql . "'"; 
    $res = mysql_query($sqlr);

    $c=0;
    while ($a_row = mysql_fetch_array($res)) {
        $getseatinfo[$c]["id"] = $a_row["id"];
        $getseatinfo[$c]["seat_number"] = $a_row["seat_number"];

        $c++;
    }
    return $getseatinfo;
}

并检查该值是否存在

global $getseatinfo;
$values=array('A1','A2','A3','B1','B2','B3');

if (array_key_exists($values,$getseatinfo)) {
    echo "Key exists!";
} else {
    echo "Key does not exist!";
}

Answer 1

执行一个查询，例如:

        $id = 1;
        $sql = "SELECT bi.id,td.* FROM booking_info bi WHERE bi id = '". $id."' "; 
        $sql .= "LEFT JOIN ticket_details td ON td.id = bi.id";