php中不转义中文字符的 json 编码方法

<?php
$arr = array ('a'=>1,'b'=>2,'c'=>3,'d'=>4,'e'=>5);
echo json_encode($arr);
?>

{"a":1,"b":2,"c":3,"d":4,"e":5}

<?php
$arr = array ('a'=>'芒果小站');
echo json_encode($arr);
?>

$arr = array ('a'=>urlencode('芒果小站'));
echo urldecode(json_encode($arr));以上代码执行后输出：

{"a":"芒果小站"}

，这里分享个更完美的方法：

 /**
  * 不转义中文字符的 json 编码方法
  * @param array $arr 待编码数组
  * @return string
  */
 function encode ($arr) {

  $str = json_encode($arr);
  $search = "#\u([0-9a-f]+)#ie";
  $replace = "iconv('UCS-2', 'UTF-8', pack('H4', '\1'))";

  return preg_replace($search, $replace, $str);

 }

$to = "test@163.com";
$subject = "Test";
$message = "This is a test mail!";
mail($to,$subject,$message);

<?php 
$jmail = new COM('JMail.Message')   o&#114; die('无法调用Jmail组件'); 
$jmail->silent = true; //屏蔽例外错误 
$jmail->charset = 'gb2312'; //否则中文会乱码 
$jmail->From = 'web535000@163.com'; //这里理论上是可以不与发件人地址相同的，但用163的试了几次都不行，改成一样的就可以了 
$jmail->FromName = 'BoboTest'; 
$jmail->AddRecipient('abc1@163.com'); //可添加多个邮件接受者 
//$jmail->AddRecipient('abc2@163.com'); 
//$jmail->AddRecipient('abc3@163.com'); 
$jmail->Subject = 'email test.'; 
$jmail->Body = 'this is test email.';  
$jmail->MailServerUserName = 'web535000@163.com'; //发信邮件账号 
$jmail->MailServerPassword = '123456'; //账户的密码 
try{ 
    $email = $jmail->Send('smtp.163.com'); 
    if($email) echo '发送成功'; 
    else echo '发送失败'; 
} catch (Exception $e){ 
    echo $e->getMessage(); 
} 
?> 

function postmail_jiucool_com($to,$subject = "",$body = ""){
    //Author:Jiucool WebSite: http://www.jiucool.com
    //$to 表示收件人地址 $subject 表示邮件标题 $body表示邮件正文
    //error_reporting(E_ALL);
    error_reporting(E_STRICT);
    date_default_timezone_set("Asia/Shanghai");//设定时区东八区
    require_once('class.phpmailer.php');
    include("class.smtp.php");
    $mail             = new PHPMailer(); //new一个PHPMailer对象出来
    $body             = eregi_replace("[]",'',$body); //对邮件内容进行必要的过滤
    $mail->CharSet ="UTF-8";//设定邮件编码，默认ISO-8859-1，如果发中文此项必须设置，否则乱码
    $mail->IsSMTP(); // 设定使用SMTP服务
    $mail->SMTPDebug  = 1;                     // 启用SMTP调试功能
                                           // 1 = errors and messages
                                           // 2 = messages only
    $mail->SMTPAuth   = true;                  // 启用 SMTP 验证功能
    $mail->SMTPSecure = "ssl";                 // 安全协议
    $mail->Host       = "smtp.googlemail.com";      // SMTP 服务器
    $mail->Port       = 465;                   // SMTP服务器的端口号
    $mail->Username   = "SMTP服务器用户名";  // SMTP服务器用户名
    $mail->Password   = "SMTP服务器密码";            // SMTP服务器密码
    $mail->SetFrom('发件人地址，如admin#jiucool.com #换成@', '发件人名称');
    $mail->AddReplyTo("邮件回复地址,如admin#jiucool.com #换成@","邮件回复人的名称");
    $mail->Subject    = $subject;
    $mail->AltBody    = "To view the message, please use an HTML compatible email viewer! - From www.111cn.net"; // optional, comment out and test
    $mail->MsgHTML($body);
    $address = $to;
    $mail->AddAddress($address, "收件人名称");
    //$mail->AddAttachment("images/phpmailer.gif");      // attachment
    //$mail->AddAttachment("images/phpmailer_mini.gif"); // attachment
    if(!$mail->Send()) {
        echo "Mailer Error: " . $mail->ErrorInfo;
    } else {
        echo "Message sent!恭喜，邮件发送成功！";
        }
    }

<?php
include ('class/class.phpmailer.php');

$config = array(
        'host'=>'smtp.163.com',
        'port'=>'25',
        'user'=>'***',
        'passwd'=>'****',
        'from'=>'juva_zz@163.com',
        'fromname'=>'郑州',
       
        );
$subject = 'this is a test mail';
$body = '<table style="background:#dfdfdf"><tr><td>测试内容</td></tr><tr><td>这是内容</td></tr></table>';
$address='379018082@qq.com';
$username='本人';

$mail = new PHPMailer();
$mail->CharSet = 'gb2312';
$mail->IsSMTP();
$mail->Host = $config['host'];
$mail->Port = $config['port'];

$mail->From = $config['from'];
$mail->FromName = $config['fromname'];
$mail->SMTPAuth = true;

$mail->Username = $config['user'];
$mail->Password = $config['passwd'];

$mail->Subject=$subject;
$mail->AltBody="text/html";
$mail->MsgHTML($body);

$mail->AddAddress($address,$username);

if(!$mail->Send())
{
    echo "Mail Error :".$mail->ErrorInfo;
}else
{
    echo "恭喜发送成功！";
}

<?php
require("class.phpmailer.php");
$mail = new PHPMailer();
$mail->CharSet = "gb2312"; /
$mail->Encoding = "base64";
$address = $_POST['address'];
$mail->IsSMTP(); // set mailer to use SMTP
$mail->Host = "smtp.126.com"; // specify main and backup server
$mail->SMTPAuth = true; // turn on SMTP authentication
$mail->Username = ""; // SMTP username
$mail->Password = "******"; // SMTP password

$mail->From = "";
$mail->FromName = "rokaye";
$mail->AddAddress("$address", "");
//$mail->AddAddress(""); // name is optional
//$mail->AddReplyTo("", "");

//$mail->WordWrap = 50; // set word wrap to 50 characters
//$mail->AddAttachment("/var/tmp/file.tar.gz"); // add attachments
//$mail->AddAttachment("/tmp/image.jpg", "new.jpg"); // optional name
//$mail->IsHTML(true); // set email format to HTML

$mail->Subject = "PHPMailer测试邮件";
$mail->Body = "Hello,这是rokaye的测试邮件";
$mail->AltBody = "This is the body in plain text for non-HTML mail clients";

if(!$mail->Send())
{
echo "Message could not be sent. <p>";
echo "Mailer Error: " . $mail->ErrorInfo;
exit;
}

echo "Message has been sent";
?>