php中json_decode返回数组或对象的实例

<?php
$json = '{"a":1,"b":2,"c":3,"d":4,"e":5}';
var_dump(json_decode($json));
var_dump(json_decode($json, true));
?>

上例将输出：

object(stdClass)#1 (5) {
["a"] => int(1)
["b"] => int(2)
["c"] => int(3)
["d"] => int(4)
["e"] => int(5)
}

array(5) {
["a"] => int(1)
["b"] => int(2)
["c"] => int(3)
["d"] => int(4)
["e"] => int(5)
}

$data='[{"Name":"a1","Number":"123","Contno":"000","QQNo":""},{"Name":"a1","Number":"123","Contno":"000","QQNo":""},{"Name":"a1","Number":"123","Contno":"000","QQNo":""}]';
echo json_decode($data);

结果为：

Array ( [0] => stdClass Object ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) [1] => stdClass Object ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) [2] => stdClass Object ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) )

echo json_decode($data,true);

结果：

Array ( [0] => Array ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) [1] => Array ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) [2] => Array ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) )

{
 "from":"zh",
 "to":"en",
 "trans_result":[
  {
   "src":"u4f60u597d",
   "dst":"Hello"
  }
 ]
}

Array
(
    [from] => zh
    [to] => en
    [trans_result] => Array
        (
            [0] => Array
                (
                    [src] => 你好
                    [dst] => Hello
                )

        )

)

<?php
$data = <<<STR
{
 "from":"zh",
 "to":"en",
 "trans_result":[
  {
   "src":"u4f60u597d",
   "dst":"Hello"
  }
 ]
}
STR;
$jsondata=json_decode($data,true);
header("Content-Type: text/html; charset=UTF-8");
print_r($jsondata);www.111cn.net
echo "<br />".$jsondata['to']; //en
echo "<br />".$jsondata['trans_result'][0]['dst']; //Hello
?>

stdClass Object
(
    [from] => zh
    [to] => en
    [trans_result] => Array
        (
            [0] => stdClass Object
                (
                    [src] => 你好
                    [dst] => Hello
                )

        )

)

<?php
$data = <<<STR
{
 "from":"zh",
 "to":"en",
 "trans_result":[
  {
   "src":"u4f60u597d",
   "dst":"Hello"
  }
 ]
}

STR;
$jsondata=json_decode($data);
header("Content-Type: text/html; charset=UTF-8");
print_r($jsondata);
echo "<br />".$jsondata->from; //zh
echo "<br />".$jsondata->trans_result[0]->src; //你好
?>

<?php
/**
 * 百度基础类
 * @author  qaulau@hotmail.com
 * @file    baidu.php
 * @date    2013-6-2  www.111cn.net

*/

class baidu{

 private $cookie = '';  
 private $username = '';
 private $password = '';
 const COOKIE_DIR = 'temp';   //cookie存放目录
 const COOKIE_VALIDATE = 604800; //cookie有效期,默认为7天
 const SECRET_KEY = 'hAFS6as8askNBVSuiealkkw'; //密钥用于加密cookie文件名，防止保存的cookie路径被猜测

 private function http_request($url, $post_data, $referef,$header = true){
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, $url);

  if ($post_data != ""){
   curl_setopt($ch, CURLOPT_POST, 1);
   curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
  }

  if ($referef != ""){
   curl_setopt($ch, CURLOPT_REFERER, $referef);
  }

  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
  curl_setopt($ch, CURLOPT_HEADER, $header);
  curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.64 Safari/537.31");

  if ($this->cookie != ""){
   curl_setopt($ch, CURLOPT_COOKIE, $this->cookie);
  }
  $data = curl_exec($ch);
  curl_close($ch);

  if ($header){
   preg_match_all('/Set-Cookie:((.+)=(.+))$/m ', $data, $cookies);
   if(is_array($cookies) && count($cookies) > 1 && count($cookies[1]) > 0){
    foreach($cookies[1] as $i => $k){
     $cookieinfos = explode(";", $k);
     if(is_array($cookieinfos) && count($cookieinfos) > 1){
      $this->cookie .= $cookieinfos[0];
      $this->cookie .= "; ";
     }
    }
   }
  }
  return $data;
 }

 private function login(){
  //生成一个cookie
  $ret = $this->http_request("https://passport.baidu.com/v2/api/?getapi&class=login&tpl=mn&tangram=true", "", "");

  //获取token并保存cookie
  $ret = $this->http_request("https://passport.baidu.com/v2/api/?getapi&class=login&tpl=mn&tangram=true", "", "");
  preg_match_all('/login_token='(.+)'/', $ret, $tokens);
  $login_token = $tokens[1][0];

  //登陆并保存cookie
  $post_data = array();
  $post_data['username'] = $this->username;
  $post_data['password'] = $this->password;
  $post_data['token'] = $login_token;
  $post_data['charset'] = "UTF-8";
  $post_data['callback'] = "parent.bd12Pass.api.login._postCallback";
  $post_data['index'] = "0";
  $post_data['isPhone'] = "false";
  $post_data['mem_pass'] = "on";
  $post_data['loginType'] = "1";
  $post_data['safeflg'] = "0";
  $post_data['staticpage'] = "https://passport.baidu.com/v2Jump.html";
  $post_data['tpl'] = "mn";
  $post_data['u'] = "http://www.baidu.com/";
  $post_data['verifycode'] = "";

  $ret = $this->http_request("http://passport.baidu.com/v2/api/?login", $post_data, "https://passport.baidu.com/v2/?login&tpl=mn&u=http%3A%2F%2Fwww.baidu.com%2F");

  //记录下所有cookie
  $this->writeCookie();  
 }

 private function writeCookie(){
  if(!file_exists(self::COOKIE_DIR)){
   @mkdir(self::COOKIE_DIR) && touch(self::COOKIE_DIR.'/index.html');
  }
  $filename = self::COOKIE_DIR.'/'.md5($this->username.self::SECRET_KEY);
  file_put_contents($filename, $this->cookie);
 }

 public function baidu($username,$password){
  $this->username = $username;
  $this->password = $password;
  $filename = self::COOKIE_DIR.'/'.md5($this->username.self::SECRET_KEY);
  if ((@filemtime($filename)+ self::COOKIE_VALIDATE > time()) && ($cookie = file_get_contents($filename))!= ''){
  //如果cookie在有效期内且不为空
   $this->cookie = $cookie;
  }else {
   $this->login();
  }
 }

 /** www.111Cn.net
  * 请求页面
  * @param string $url  ：页面地址
  * @param string $referef ：引用页面
  * @param string $post_data ：post数据,如果填写则为post方式否则为get方式
  * 返回页面数据
  */
 public function request($url,$referef = '',$post_data = ''){
  return $this->http_request($url,$referef,$post_data,false);
 }

}

$baidu = new baidu('用户名','密码');
$data = $baidu->request('http://pan.baidu.com/api/list?channel=chunlei&clienttype=0&web=1&num=100&page=1&dir=%2F','http://pan.baidu.com');
echo $data;

/**
 * 递归获取分类
 * @author：xxx
 * @param $tree_id
 */
function get_child_tree($tree_id = 0)
{
    $three_arr = array();
         
    $sql = “SELECT count(*) FROM TABLE WHERE parent_id = “$tree_id” AND is_show = 1 ";
    if ($GLOBALS[db]->getOne($sql) || $tree_id == 0)
    {
        $child_sql = "SELECT ……";
        $res = $GLOBALS[db]->getAll($child_sql);
        foreach ($res AS $row)
        {
            if ($row[is_show])
            {
                $arr[id] = $row[cat_id];
                ……
            }
 
            if ( intval($row[cat_id]) != 0) {
            $three_arr[$row[cat_id]][cat_id] = get_child_tree($row[cat_id]);
            ……
            }
        }
    }
    return $three_arr;
}

<form action=www.111cn.net method="post">

 <p>请输入ip地址：<input type="text" name="ip" /></p>

 <p><input type="submit" value="查询"  /></p>

</form>

<?php

 //获取ip地址

 //$ip = $_SERVER['REMOTE_ADDR'];    //自动获取客户端的IP

 //ip对应的地区

 if(!empty($_POST['ip'])){

  $ip = $_POST['ip'];

  //接口地址,这样返回的是一个xml结果集，

  $str = file_get_contents("http://www.yodao.com/smartresult-xml/search.s?type=ip&q=".$ip);

  //这里要得到里面的地址信息，提取xml方法有很多，我用的是正则。

  preg_match_all( "/<location>(.*?)</location>/",$str,$addr1);

  //最终结果，如图2;

  $addr = $ip."=>".$addr1[1][0];

  echo $addr;

 }

?>

$qqwry=new qqwry('QQWry.Dat');

list($addr1,$addr2)=$qqwry->q('127.0.0.1');
$addr1=iconv('GB2312','UTF-8',$addr1);
$addr2=iconv('GB2312','UTF-8',$addr2);
echo $addr1,'|',$addr2," ";

$arr=$qqwry->q('222.216.47.4');
$arr[0]=iconv('GB2312','UTF-8',$arr[0]);
$arr[1]=iconv('GB2312','UTF-8',$arr[1]);
echo $arr[0],'|',$arr[1]," ";

$arr=$qqwry->q('64.233.187.99');
$arr[0]=iconv('GB2312','UTF-8',$arr[0]);
$arr[1]=iconv('GB2312','UTF-8',$arr[1]);
echo $arr[0],'|',$arr[1]," ";

 <form action="post.php" method="post">
<input type="text" name="user">
<input type="password" name="password">
<input type="submit">
</form>

 <? echo file_get_contents("php://input");?>

<form action="welcome.php" method="post">
Enter your name: <input type="text" name="name" />
Enter your age: <input type="text" name="age" />
<input type="submit" />
</form>