Jquery自动完成在一行中显示来自mysql的两行

Question

我有一个多行的 mysql 表

ID, country, city, region

我有一个使用 jquery-ui 自动完成功能的搜索，它目前自动完成城市搜索，如下所示：

if (isset($_GET['term'])){
    $return_arr = array();

    try {
        $conn = new PDO("mysql:host=".DB_SERVER.";port=8889;dbname=".DB_NAME, DB_USER, DB_PASSWORD);
        $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

        $stmt = $conn->prepare('SELECT city,country FROM location WHERE city LIKE :term LIMIT 10');
        $stmt->execute(array('term' => '%'.$_GET['term'].'%'));

        while($row = $stmt->fetch()) {
            $return_arr[] =  $row['city'];

        }

    } catch(PDOException $e) {
        echo 'ERROR: ' . $e->getMessage();
    }



    echo json_encode($return_arr);
}

我想在城市旁边显示国家，所以Los Angeles 会变成Los Angeles, US

Answer 1

在 php 中，您可以使用 '.' 附加一个字符串。例如：

$mystring = 'part one' . 'part two';

echo $mystring; //-> will product: part onepart wo

你也可以让php解释一个字符串，用'"'（双引号）分隔

$myvar = "boat";
$mystring = "One day I'll buy a {$myvar}";

echo $mystring; //-> will produce: One day I'll buy a boat

以下应该可以正常工作。祝你好运！

if (isset($_GET['term'])){
    $return_arr = array();

    try {
        $conn = new PDO("mysql:host=".DB_SERVER.";port=8889;dbname=".DB_NAME, DB_USER, DB_PASSWORD);
        $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

        $stmt = $conn->prepare('SELECT city,country FROM location WHERE city LIKE :term LIMIT 10');
        $stmt->execute(array('term' => '%'.$_GET['term'].'%'));

        while($row = $stmt->fetch()) {
            $return_arr[] =  $row['city'] . ', ' . $row['country'];

        }

    } catch(PDOException $e) {
        echo 'ERROR: ' . $e->getMessage();
    }



    echo json_encode($return_arr);
}

解决此问题的另一种替代方法是将字符串附加到您的 SQL 中

SELECT CONCAT(city, ', ', country) AS location FROM location WHERE city LIKE :term LIMIT 10