PHP调用API返回乱码怎么处理_PHP API返回乱码问题排查与字符编码转换教程

$content = file_get_contents('https://api.example.com/data');
$encoding = mb_detect_encoding($content, ['UTF-8', 'GBK', 'GB2312', 'ISO-8859-1'], true);
echo "检测到的编码：", $encoding;

// 假设原始编码是GBK，转为UTF-8
$utf8_content = iconv('GBK', 'UTF-8//IGNORE', $content);

$utf8_content = mb_convert_encoding($content, 'UTF-8', 'GBK');

$context = stream_context_create([
    'http' => [
        'header' => "Accept-Charset: UTF-8\r\n" .
                    "User-Agent: PHP API Client\r\n"
    ]
]);
$content = file_get_contents('https://api.example.com/data', false, $context);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://api.example.com/data');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'Accept-Charset: UTF-8'
]);
$response = curl_exec($ch);
curl_close($ch);

header('Content-Type: text/html; charset=UTF-8');
// 或如果是JSON接口
header('Content-Type: application/json; charset=UTF-8');

mysqli_set_charset($connection, 'utf8');
// 或PDO中指定charset
new PDO("mysql:host=localhost;dbname=test;charset=utf8", $user, $pass);