PHP MySQL Json_编码不显示任何内容

我不明白为什么我的php没有显示任何内容。 我有一个数据库，我想把基本元素放在JSON中。 然而，当我用本地主机测试php时，我什么都没有

我的数据库电影：

DROP TABLE IF EXISTS `Movies` ;

CREATE TABLE IF NOT EXISTS `Movies` (
`classment` INT NOT NULL,
`title` VARCHAR(45) NOT NULL,
`actors` VARCHAR(45) NOT NULL,
`kind` VARCHAR(45) NOT NULL,
`director` VARCHAR(45) CHARACTER SET 'big5' NOT NULL,
`date` DATE NOT NULL,
`image` BLOB NULL,
`summary` VARCHAR(1000) NOT NULL,
PRIMARY KEY (`classment`))
ENGINE = InnoDB;

我将两部电影插入数据库：

INSERT INTO Movies (classment, title, actors, kind, director, date, image, summary)
VALUES ('1', 'The Lord of the rings : The fellowship of the rings', 'Elijah Wood, Ian McKellen, Viggo Mortensen', 'Adventure/Fantasy', 'Peter Jackson','19/12/2001', 'LOAD_FILE("/home/michael/Documents/Dkit/Master1/Semester2/Enterprise_Mobility/CA2/images/LoR1.jpeg")', 'A meek hobbit of the Shire and eight companions set out on a journey to Mount Doom to destroy the One Ring and the dark lord Sauron.' );

INSERT INTO Movies (classment, title, actors, kind, director, date, image, summary)
VALUES ('2', 'The Lord of the rings : The two towers', 'Elijah Wood, Ian McKellen, Viggo Mortensen', 'Adventure/Fantasy', 'Peter Jackson','18/12/2002', 'LOAD_FILE("/home/michael/Documents/Dkit/Master1/Semester2/Enterprise_Mobility/CA2/images/LoR2.jpeg")', 'While Frodo and Sam edge closer to Mordor with the help of the shifty Gollum, the divided fellowship makes a stand against Sauron\'s new ally, Saruman, and his hordes of Isengard.' );

和我的PHP代码：

<?php

try{
 $handler = new PDO('mysql:host=localhost;dbname=movies', 'root', 'xxxx');
 $handler->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

 }catch(Exception $e){
  echo $e->getMessage();
  die();
 }

// query the application data
$query = $handler->prepare('SELECT title, image FROM Movies');

//execute the prepared statement
$query->execute();

// an array to save the application data
$rows = array();

// iterate to query result and add every rows into array
while($row = $query->fetch(PDO::FETCH_ASSOC)) {
   $rows[] = $row;
}

$row1["ListMovies"] = $rows;
die(json_encode($row1));
?>

我想获得如下内容：{“ListMovies”：[]}

谢谢你的帮助

---

Michaël

因为php代码不需要输入，所以您可以像普通页面一样从浏览器中运行它

因此，向它添加一些调试消息，这样您就可以看到它的目的地（如果在任何地方）

<?php
echo 'HELLO<br>';

try{
 echo 'TRYING<br>';
 $handler = new PDO('mysql:host=localhost;dbname=movies', 'root', 'xxxx');
 $handler->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

 }catch(Exception $e){
  echo $e->getMessage();
  die();
 }

// query the application data
echo 'BEFORE PREPARE<br>';

$query = $handler->prepare('SELECT title, image FROM Movies');

echo 'AFTER PREPARE<br>';

//execute the prepared statement
$query->execute();

echo 'AFTER EXECUTE<br>';

// an array to save the application data
$rows = array();

// iterate to query result and add every rows into array
while($row = $query->fetch(PDO::FETCH_ASSOC)) {
   echo '<pre>In While' . print_r($row,true) . '</pre>';
   $rows[] = $row;
}

$row1["ListMovies"] = $rows;
echo '<pre>' . print_r($row1,true) . '</pre>';

echo json_encode($row1);
exit;
?>

我建议您查看表的设计，因为您正在将45个以上的字符加载到

title

中，并且插入的

date

列定义不正确

i、 e.insert中的日期应为“yyyy-mm-dd”格式，或者MySQL不将其理解为日期。

我有以下信息：

但是，在手册页面中没有json_编码：

所有字符串数据必须采用UTF-8编码

您的代码中没有任何对UTF-8的引用。连接到数据库时甚至不设置编码：

---

我希望在连接字符串中看到

charset=utf8

或其他内容。

您是否可以通过将页面更改为die（“我在这里！”）来确认页面正在到达最终的die（）行；当我因死亡而改变（“我就是她！”）；也没有显示。这对我来说意味着问题在别处。将此权限添加到脚本的开头。在尝试之前，我已经放了{，对吗？是的，没错……很惊讶你没有看到任何东西，但我建议这个问题比json_编码部分更深，你的语法在我看来很好！然后将

die（json_encode（$row1））；

更改为

echo json_encode（$row1）；退出；

就像我在回答中所做的那样。这是工作，我已经更改了日期。因此，非常感谢您的帮助。谢谢。没关系，只需将答案标记为正确即可，以便其他人来搜索时知道

HELLO
TRYING
BEFORE PREPARE
AFTER PREPARE
AFTER EXECUTE

In WhileArray
(
    [title] => The Lord of the rings : The fellowship of the
    [image] => LOAD_FILE("/home/michael/Documents/Dkit/Master1/Semester2/Enterprise_Mobility/CA2/images/LoR1.jpeg")
)

In WhileArray
(
    [title] => The Lord of the rings : The two towers
    [image] => LOAD_FILE("/home/michael/Documents/Dkit/Master1/Semester2/Enterprise_Mobility/CA2/images/LoR2.jpeg")
)

Array
(
    [ListMovies] => Array
        (
            [0] => Array
                (
                    [title] => The Lord of the rings : The fellowship of the
                    [image] => LOAD_FILE("/home/michael/Documents/Dkit/Master1/Semester2/Enterprise_Mobility/CA2/images/LoR1.jpeg")
                )

            [1] => Array
                (
                    [title] => The Lord of the rings : The two towers
                    [image] => LOAD_FILE("/home/michael/Documents/Dkit/Master1/Semester2/Enterprise_Mobility/CA2/images/LoR2.jpeg")
                )

        )

)

{"ListMovies":[{"title":"The Lord of the rings : The fellowship of the","image":"LOAD_FILE(\"\/home\/michael\/Documents\/Dkit\/Master1\/Semester2\/Enterprise_Mobility\/CA2\/images\/LoR1.jpeg\")"},{"title":"The Lord of the rings : The two towers","image":"LOAD_FILE(\"\/home\/michael\/Documents\/Dkit\/Master1\/Semester2\/Enterprise_Mobility\/CA2\/images\/LoR2.jpeg\")"}]}

HELLO
TRYING
BEFORE PREPARE
AFTER PREPARE
AFTER EXECUTE

In WhileArray
(
[title] => The Lord of the rings : The fellowship of the
[image] => LOAD_FILE("/home/michael/Documents/Dkit/Master1/Semester2/Enterprise_Mobility/CA2/images/LoR1.jpeg")
)

In WhileArray
(
[title] => The Lord of the rings : The two towers
[image] => LOAD_FILE("/home/michael/Documents/Dkit/Master1/Semester2/Enterprise_Mobility/CA2/images/LoR2.jpeg")
)
Array
(
[ListMovies] => Array
    (
        [0] => Array
            (
                [title] => The Lord of the rings : The fellowship of the
                [image] => LOAD_FILE("/home/michael/Documents/Dkit/Master1/Semester2/Enterprise_Mobility/CA2/images/LoR1.jpeg")
            )

        [1] => Array
            (
                [title] => The Lord of the rings : The two towers
                [image] => LOAD_FILE("/home/michael/Documents/Dkit/Master1/Semester2/Enterprise_Mobility/CA2/images/LoR2.jpeg")
            )

    )

  ) 

new PDO('mysql:host=localhost;dbname=movies', 'root', 'xxxx');
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^