我从mysql phpmyadmin(版本4.0)表获取JSON数据时遇到问题,我尝试过PDO和mysql_connect。
我的想法:mysql - > PHP - > echo json
与我的服务器的连接正常,SQL语句完美运行。我测试了它。但是JSON本身的" json_encode"(以及其他一些)是不可能的。 json数组未构建。
PhpMyAdmin中是否有必须注意的设置?
PDO:
$query = $pdo->prepare('SELECT p.*, count(r.rate) AS rates, avg(r.rate) AS average from plugins p left join rate r on p.title = r.title group by p.title');
$query->execute();
$row = $query->fetchAll();
// send the data encoded as JSON
$json = json_encode($row, JSON_UNESCAPED_UNICODE);
echo $json;
print_r($row);
exit;
结果是:
Array ( [0] => Array ( [id] => 153 [0] => 153 [title] =>
我哪里错了?我将我的服务器更新为PHP 7.0 ,现在代码不起作用。在更新之前,所有工作都很完美,并且有一个很长的json数组(应该如何)
它应该如何
{{"id":"1","title":"ExmapleTitle"....},{"id":"2","title":"ExmapleTitle2"....}...}
答案 0 :(得分:2)
您必须调用execute()
<?php
$pdo = new PDO('mysql:host=xxxxx;dbname=xxxxx', 'xxxxxx', 'xxxxxx');
$statement=$pdo->prepare("SELECT p.*, count(r.rate) AS rates, avg(r.rate) AS average from plugins p left join rate r on p.title = r.title group by p.title");
$statement->execute(); // <<< --- You are missing this
$data = $statement->fetchAll(PDO::FETCH_ASSOC);
echo json_encode($data); //Echo: data ... voila