PHP json_encode SOMETIMES 返回 "null"作为数据库查询的值

Question

从数据库进行 SELECT 查询时，有时，我会在文本字段中得到一个空值。这似乎是随机的，但通常在我更新数据库后，这个问题似乎会随之而来。以下是我的代码:

require_once('database.php');

$sql = "SELECT stories.id, authors.name AS author, authors.dates AS dates, authors.life AS life, stories.title AS title, stories.text AS text, stories.summary AS summary, stories.reading_time AS time, stories.cost AS cost, stories.file_name AS story_filename, category.name AS category
FROM stories
INNER JOIN category ON stories.category_id = category.id
INNER JOIN authors ON stories.author_id = authors.id";

if ($result = mysqli_query($con, $sql)) {
 $resultArray = array();
 $tempArray = array();

while($row = $result->fetch_object()) {
 $tempArray = $row;
 array_push($resultArray, $tempArray);
}
echo json_encode($resultArray, JSON_PRETTY_PRINT);
}
mysqli_close($con);

错误发生在文本字段上。它作为

text = "<null>";

其他字段没问题。

我很感激这方面的任何帮助!谢谢

Answer 1

我遇到了同样的问题。 我的解决方案是将数据库中的文本字段属性从 utf8_general_ci 更改为 asci_bin。

问候