我写了一个小脚本，从 MySQL 表中获取数据并将其放入 JSON 数组中。但是，字符编码存在问题，即使我在所有地方都设置了 UTF-8。这是脚本:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>JSON</title>
</head>
<?php
header('Content-type: text/html; charset=UTF-8');
$con = mysqli_connect("HOST", "USERNAME", "PASSWORD", "DATABASE");
if (!$con) {
trigger_error('Could not connect to MySQL: ' . mysqli_connect_error());
}
mysqli_set_charset($con,"utf8");
mysql_query("SET NAMES SET 'utf8'");
mysql_query("SET character_set_client = 'utf8'");
mysql_query("SET character_set_connection = 'utf8'");
mysql_query("SET character_set_results = 'utf8'");
$sql = "SELECT * FROM table";
$result = mysqli_query($con, $sql);
$rows = array();
while($r = mysqli_fetch_assoc($result)) {
$rows[]=$r;
}
print json_encode($rows);
mysqli_close($con);
?>
</html>
在输出中，我得到值“\u00e4”而不是“ä”。
一些附加信息:
- 表在 utf8_general_ci 中(它的所有列也是如此)
- PHP 文件是 UTF8 格式
我做错了什么？ 感谢您的帮助!!
最佳答案
在我看来一切正常。您看到 \u00e4 而不是 ä 的原因是因为 JSON 序列化程序的实现。序列化程序所做的是完全有效的。
来自JSON RFC Section 2.5 Strings
Any character may be escaped. If the character is in the Basic Multilingual Plane (U+0000 through U+FFFF), then it may be represented as a six-character sequence: a reverse solidus, followed by the lowercase letter u, followed by four hexadecimal digits that encode the character's code point. The hexadecimal letters A though F can be upper or lowercase. So, for example, a string containing only a single reverse solidus character may be represented as "\u005C".
我怀疑为什么这个序列化器会为你转义它的原因是因为 PHP doesn't natively support unicode .
A string is series of characters, where a character is the same as a byte. This means that PHP only supports a 256-character set, and hence does not offer native Unicode support.
关于php - MySQL 到 JSON : Issue with encoding of German special characters in UTF-8，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/25692949/