Question

我将从select语句中获得输出 - ＆gt; json_encode，但不起作用。我的屏幕是空白的，请帮帮我。我使用xammp for Mac。

<?php
$servername = "localhost";
$username = "root";
$password = "";   
try {
    $conn = new PDO("mysql:host=$servername;dbname=app", $username, $password);
    // set the PDO error mode to exception
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    echo "Connected successfully"; 
}
catch(PDOException $e)
    {
    echo "Connection failed: " . $e->getMessage();
     }   
    $stmt = $conn->prepare("SELECT Name,Adresse,Latitude,Longi from Location"); 
    $stmt->execute();
    $row = $stmt->fetchAll(PDO::FETCH_ASSOC);
    //var_dump($row);
        // If so, then create a results array and a temporary one
        // to hold the data
        $resultArray = array();
        $tempArray = array();

        // Add each row into our results array
        $tempArray = $row;
        array_push($resultArray, $tempArray);

    // Finally, encode the array to JSON and output the results

    echo json_encode($tempArray,true);


$conn = null;
?>

Answer 1

您的代码段对我来说很好。

您可以使用print_r或类似的东西进行尝试，或检查您的数据库是否包含特殊字符

从json_encode输出

1 个答案: